Prosecution Insights
Last updated: October 25, 2026
Application No. 18/709,407

CONVEYING DEVICE FOR A PLANT FOR THE PRODUCTION OF CEMENT

Non-Final OA §102§103
Filed
May 10, 2024
Priority
Nov 11, 2021 — DE 10 2021 129 323.5 +1 more
Examiner
HARP, WILLIAM RAY
Art Unit
Tech Center
Assignee
Khd Humboldt Wedag GmbH
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
920 granted / 1163 resolved
+19.1% vs TC avg
Moderate +11% lift
Without
With
+10.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
24 currently pending
Career history
1196
Total Applications
across all art units

Statute-Specific Performance

§101
2.9%
-37.1% vs TC avg
§103
41.5%
+1.5% vs TC avg
§102
20.2%
-19.8% vs TC avg
§112
30.8%
-9.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1163 resolved cases

Office Action

§102 §103
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 . The specification, abstract, drawings of May 10, 2024 and the claims of July 20, 2026 are under examination. Election/Restrictions Applicant’s election without traverse of invention of Group I in the reply filed on July 20, 2026 is acknowledged. Response to Amendment The submission entered July 20, 206 in response to an Office Action mailed July 14, 2026 is acknowledged. Claims 6-9 are pending. Claim(s) 1-5 is/are cancelled. Claim 9 is withdrawn. Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statement(s) (IDS) was/were submitted on May 10, 2024. The submission(s) is/are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement(s) is/are being considered by the examiner. 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. Claim(s) 6, 7 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by European Document (EP 2922800 B1, copy in the English language provided by applicant, hereafter ‘800). Regarding Claim(s) 6, ‘800 teaches a device (drying pipe 40) for conveying bulk material, in the device comprising: a first connection (32) with the plant, in which bulk material to be transported passes into the plant, and, a further connection (inlet section 42) to the plant configured to provide a gas supply for pressurizing with a recirculation gas (inlet section is connected to exhaust line from a clinker cooler). The language “for a plant for production of cement clinker, wherein the plant operates in a recirculation process, or in an oxy-fuel process, or both” does not limit the structure of the device as the language is the intended use of the device. Regarding Claim(s) 7, the device is a pneumatic lifting device [Para. 19, “upward section of the drying pipe is preferably substantially vertical”]. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claim(s) 8 is/are rejected under 35 U.S.C. 103 as being unpatentable over ‘800 as applied to claim 6 above, and further in view of Tell (USPN 9611106). Regarding Claim(s) ‘800 teaches a control device [Para. 23, implied by “gas speed in the upward section may be adjusted to optimize this potential fall of heavy particles”] configured to adjust an amount of gas supply. ‘800 fails to teach the adjusting is a function of a flow rate of a pneumatically conveyed bulk material, wherein the gas supply increases with a lower flow velocity of the pneumatically conveyed bulk material and decreases with a higher velocity of the pneumatically conveyed bulk material. Tell (USPN 9611106) teaches a control device (4a, 4b) configured to adjust an amount of gas supply as a function of a flow rate of a pneumatically conveyed bulk material, wherein the gas supply increases with a lower flow velocity of the pneumatically conveyed bulk material and decreases with a higher velocity of the pneumatically conveyed bulk material [Col. 6:42-51] in order to provide reduced acceleration and/or retardation of the material [Col. 6:56-59]. It would have been obvious before the effective filing date of the claimed invention to a person of ordinary skill in the art to reduce acceleration and/or retardation of the material. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. USPN 12560381 teaches a device that would be considered to anticipate at least claim 6. USPN 5292247 teaches a device that would be considered to anticipate at least claim 6. WO2009030700A2 teaches a device that would be considered to anticipate at least claim 6. USPN 6955506 discloses controlling speed in a pipeline. Any inquiry concerning this communication or earlier communications from the examiner should be directed to WILLIAM RAY HARP whose telephone number is (571)270-5386. The examiner can normally be reached Monday-Friday, 8am-5pm. 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, MICHAEL MCCULLOUGH can be reached at (571) 272-7805. 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. /WILLIAM R HARP/Primary Examiner, Art Unit 3653
Read full office action

Prosecution Timeline

May 10, 2024
Application Filed
Oct 09, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12747111
CAN ORIENTATION VERIFICATION SYSTEMS AND METHODS
2y 8m to grant Granted Sep 29, 2026
Patent 12746994
ASSEMBLING PRODUCTION SYSTEM
2y 7m to grant Granted Sep 29, 2026
Patent 12722912
Transport Device, Specimen Analysis System Comprising Transport Device, and Specimen Pre-Treatment Device Comprising Transport Device
2y 7m to grant Granted Sep 01, 2026
Patent 12709487
APPARATUS AND METHOD FOR MONITORING CONVEYOR SYSTEMS
2y 2m to grant Granted Aug 18, 2026
Patent 12692097
APPARATUS OF MTL AND TRANSFER SYSTEM INCLUDING THE SAME
3y 1m to grant Granted Jul 28, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
79%
Grant Probability
90%
With Interview (+10.8%)
2y 2m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1163 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month