Prosecution Insights
Last updated: August 18, 2026
Application No. 18/901,402

DIELECTRIC BARRIER DISCHARGE DEVICE CONFIGURATIONS

Non-Final OA §102§103§112
Filed
Sep 30, 2024
Examiner
CHEN, PATRICK C
Art Unit
2836
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Aerojet Rocketdyne Inc.
OA Round
2 (Non-Final)
82%
Grant Probability
Favorable
2-3
OA Rounds
5m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allowance Rate
474 granted / 575 resolved
+14.4% vs TC avg
Moderate +10% lift
Without
With
+9.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
43 currently pending
Career history
616
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
44.5%
+4.5% vs TC avg
§102
29.7%
-10.3% vs TC avg
§112
20.6%
-19.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 575 resolved cases

Office Action

§102 §103 §112
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. In addressing the rejection ground, each claim may not have been separately discussed to the extent the claimed features are the same as or similar to the previously-discussed features; the previous discussion is construed to apply for the other claims in the same or similar way. In the office action, “/” should be read as and/or as generally understood. For example, “A/B” means A and B, or A or B. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 10 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 10 recites the limitation "wherein the gas inlets are in the insulation layer" in lines 1-2. There is insufficient antecedent basis for this limitation in the claim. It’s unclear whether the claim dependent on another claim, in the insulation layer means in an insulation layer, or something else. Further clarification is required. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale or otherwise available to the public before the effective filing date of the claimed invention. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-2, 5, 6 and 15 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Seok et al. (US 2020/0402810). Regarding claim 1, Seok discloses a dielectric barrier discharge device [e.g. fig. 1/2] comprising: a dielectric layer [e.g. 110] having opposed first and second sides; a first electrode [e.g 130] on the first side of the dielectric layer, the first electrode defining a ring [see at least para. 0041, fig. 1/2] that circumscribes a cavity [e.g. 131/ the cavity between the lower surface of 110 and 150], the dielectric layer having a surface [e.g. lower surface] exposed at a first end [e.g. upper end] of the cavity such that the first end is closed-ended; a second electrode [e.g. 120] on the second side of the dielectric layer opposite the cavity; a gas inlet [e.g. 150] fluidly connected with the cavity; and a power supply [e.g. 140] electrically coupled with the first electrode and the second electrode. Regarding claim 2, Seok discloses the dielectric barrier discharge device as recited in claim 1, wherein the power supply, upon activation, generates a plasma from gas flowing into the cavity from the gas inlet and the plasma is expelled from a second, open end of the cavity opposite the first end [see at least para. 0049]. Regarding claim 5, Seok discloses the dielectric barrier discharge device as recited in claim 1, wherein the cavity is cylindrical and has a diameter of at least 2 millimeters [e.g. see at least para. 0053, fig. 1/2]. Regarding claim 6, Seok discloses the dielectric barrier discharge device as recited in claim 1, wherein the cavity has height and an aspect ratio of diameter to height is greater than one [e.g. see at least para. 0053, fig. 1/2]. Regarding claim 15, the combination discussed above discloses the dielectric barrier discharge device as recited in claim 1, wherein the first electrode is in interfacial contact with the first side of the dielectric layer and the first side of the dielectric layer is a planar surface [see at least fig. 1/2 Seok]. Claim(s) 7-12 and 17 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Zong et al. (CN 115515289). Regarding claim 7, Zong discloses a dielectric barrier discharge device [e.g. abstract, fig. 1-3] comprising: a dielectric layer [e.g. 30] having opposed first and second sides; a first electrode [e.g. 20] on the first side [e.g. upper side] of the dielectric layer, the first electrode defining an array of cavities [see at least fig. 1], the dielectric layer having surfaces exposed at first ends [e.g. lower end] of the cavities such that the first end is closed-ended; a second electrode [e.g. 40] on the second side of the dielectric layer opposite the cavities; gas inlets[see 102s] fluidly connected with the cavities; and a power supply [e.g. 50] electrically coupled with the first electrode and the second electrode. Regarding claim 8, Zong discloses the dielectric barrier discharge device as recited in claim 7, wherein the power supply, upon activation, generates a plasma [see at least abstract] from gas flowing into the cavities from the gas inlets and the plasma is expelled from second, open ends of the cavities opposite the first ends [see at least fig. 3]. Regarding claim 9, Zong discloses the dielectric barrier discharge device as recited in claim 7, wherein the array has a grid pattern [see at least fig. 1]. Regarding claim 10 (as best understood), Zong discloses the dielectric barrier discharge device as recited in claim 7, wherein the gas inlets are in the insulation layer [e.g. 10]. Regarding claim 11, Zong discloses the dielectric barrier discharge device as recited in claim 7, wherein each of the cavities is cylindrical and has a diameter of at least 2 millimeters [e.g. 2-5mm; see at least para. 0020]. Regarding claim 12, Zong discloses the dielectric barrier discharge device as recited in claim 7, wherein the dielectric barrier discharge device is in a thruster [in the array jet stage, the actuator cavity 105 of the high pressure drive, high temperature gas from inside to outside the convergence type jet hole 102 quickly spraying, forming a high speed jet array 60, for the flow control under supersonic or other occasions. The jet flow in the injection process, the pressure in the actuator cavity 105 will be continuously reduced. when the pressure in the cavity 105 is less than or equal to the atmospheric pressure, the jet is over, the exciter starts cooling, enters the porous suction recovery (para. 0052, Zong); see at least fig. 3]. Regarding claim 17, Zong discloses the dielectric barrier discharge device as recited in claim 7, further comprising an electrostatic grid [see at least 10] provided over the cavities and an insulation layer [e.g. 105] between the electrostatic grid and the first electrode, the electrostatic grid configured to accelerate a plasma expelled from the cavities. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 3-4 and 13-14 is/are rejected under 35 U.S.C. 103 as being unpatentable over Seok et al. (US 2020/0402810) in view of Lu et al. (CN 114845459). Regarding claim 3, Seok discloses the dielectric barrier discharge device as recited in claim 1, except further comprising a magnetic ring on the first electrode and circumscribing the second end of the cavity, the magnetic ring accelerating a plasma expelled from the second end. However, Lu discloses a magnetic ring [e.g. 8] on a first electrode [e.g. 6] and circumscribing the second end of the cavity, the magnetic ring accelerating a plasma expelled from the second end. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the device disclosed by Seok in accordance with the teaching of Lu regarding a magnetic ring in order to provide a magnetic field in the gas output pipeline to improve the device [abstract]. Regarding claim 4, the combination discussed above discloses the dielectric barrier discharge device as recited in claim 3, further comprising an insulation layer between the magnetic ring and the first electrode [e.g. the annular magnet is coaxially placed on the outer side of the dielectric barrier electrode, and keeps a certain distance with the dielectric barrier electrode, para. 0032 Lu]. Regarding claim 13, Seok discloses a dielectric barrier discharge device comprising: a dielectric layer having opposed first and second sides; a first electrode on the first side of the dielectric layer, the first electrode defining a ring that circumscribes a cavity, the dielectric layer having a surface exposed at a first end of the cavity; a second electrode on the second side of the dielectric layer opposite the cavity; a gas inlet fluidly connected with the cavity; a power supply electrically coupled with the first electrode and the second electrode [see rejection of claim 1]; except and a magnetic ring on the first electrode and circumscribing the second end of the cavity, the magnetic ring accelerating a plasma expelled from the second end. However, Lu discloses a magnetic ring [e.g. 8] on a first electrode [e.g. 6] and circumscribing the second end of the cavity, the magnetic ring accelerating a plasma expelled from the second end. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the device disclosed by Seok in accordance with the teaching of Lu regarding a magnetic ring in order to provide a magnetic field in the gas output pipeline to improve the device [abstract]. Regarding claim 14, the combination discussed above discloses the dielectric barrier discharge device as recited in claim 13, wherein the first end of the cavity is closed-ended [see fig. 1/2 Seok]. Claims 7-12 and 17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Seok et al. (US 2020/0402810) in view of Zong et al. (CN 115515289). Regarding claim 7, Seok discloses a dielectric barrier discharge device comprising: a dielectric layer having opposed first and second sides; a first electrode on the first side of the dielectric layer, the first electrode defining a cavity [see at least figs. 1-2], the dielectric layer having surfaces exposed at first ends [e.g. left end/right end] of the cavities such that the first end is closed-ended; a second electrode on the second side of the dielectric layer opposite the cavities; gas inlets fluidly connected with the cavities; and a power supply electrically coupled with the first electrode and the second electrode. Please see rejection of claim 1. Seok does not disclose an array of cavities. However, Lu discloses an array of cavities [see at least figs. 1-2]. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the device disclosed by Seok in accordance with the teaching of Lu regarding an array plasma synthetic jet actuator in order to provide multiple cavities to discharge gas. Regarding claim 8, the combination discussed above discloses the dielectric barrier discharge device as recited in claim 7, wherein the power supply, upon activation, generates a plasma [see at least abstract] from gas flowing into the cavities from the gas inlets and the plasma is expelled from second, open ends of the cavities opposite the first ends [see at least figs. 1-2 Seok]. Regarding claim 9, the combination discussed above discloses the dielectric barrier discharge device as recited in claim 7, wherein the array has a grid pattern [see at least fig. 1 Zong]. Regarding claim 10 (as best understood), the combination discussed above discloses the dielectric barrier discharge device as recited in claim 7, wherein the gas inlets are in the insulation layer [e.g. 10 Zong]. Regarding claim 11, the combination discussed above discloses the dielectric barrier discharge device as recited in claim 7, wherein each of the cavities is cylindrical and has a diameter of at least 2 millimeters [see at least para. 0053, fig. 1-2 Seok; 2-5mm; see at least para. 0020 Zong]. Regarding claim 12, the combination discussed above discloses the dielectric barrier discharge device as recited in claim 7, wherein the dielectric barrier discharge device is in a thruster [see para. 0052; at least fig. 3 Zong]. Regarding claim 17, the combination discussed above discloses the dielectric barrier discharge device as recited in claim 7, further comprising an electrostatic grid [see at least 10 Zong] provided over the cavities and an insulation layer [e.g. 105] between the electrostatic grid and the first electrode, the electrostatic grid configured to accelerate a plasma expelled from the cavities. Claim 16 is/are rejected under 35 U.S.C. 103 as being unpatentable over Seok et al. (US 2020/0402810) in view of Burke et al. (US 2006/0011465). Regarding claim 16, Seok discloses the dielectric barrier discharge device as recited in claim 1, except wherein the power supply comprises an alternating current source that further includes a direct current bias. However, it’s well-known to provide a power supply comprises an alternating current source that further includes a direct current bias. For example, Burke discloses a power supply comprises an alternating current source that further includes a direct current bias [see at least claims 26-29]. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to modify the device disclosed by Seok in accordance with the teaching of Burke regarding a DC bias in order to increases the electron diffusion [para. 0020]. Response to Arguments Applicant’s arguments with respect to claim(s) 1, 7 and 13 have been considered but are moot because the new ground of rejection relying on new references, Seok et al. (US 2020/0402810) and/or Zong et al. (CN 115515289), which were applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to PATRICK C CHEN whose telephone number is (571)270-7207. The examiner can normally be reached M-F Flexible 8:00-16:30. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Regis Betsch can be reached at (571)270-7101. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /PATRICK C CHEN/Primary Examiner, Art Unit 2836
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Prosecution Timeline

Sep 30, 2024
Application Filed
Dec 30, 2025
Non-Final Rejection mailed — §102, §103, §112
Mar 27, 2026
Response Filed
Jun 10, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
82%
Grant Probability
92%
With Interview (+9.5%)
2y 4m (~5m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 575 resolved cases by this examiner. Grant probability derived from career allowance rate.

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