Prosecution Insights
Last updated: October 25, 2026

Jusung Engineering Co., Ltd.

Technology areas: Chemistry & Materials • Semiconductors, Circuits & Optics

16 pending office actions • 10 art units • 15 examiners • 0 of 16 (0%) have an AI response strategy ready • 19 patents granted in the last 365 days

Analysis

Jusung Engineering Co., Ltd. has 18 pending office actions in Chemistry & Materials. The matters involve 16 distinct examiners across 10 distinct art units, indicating broad distribution with some repeated examiner and technical assignments.

CHEN, KEATH T is the busiest examiner, with 3 pending matters. That concentration supports targeted review of recurring treatment, while the remaining cases call for separate analysis. Counsel should align materials terminology and specification support across the art units, then tailor claim amendments and prior-art arguments to the examiner handling each application.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

16
Total Pending OAs
8
Non-Final OAs
8
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 6 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

4
Overdue
0
Due this week
1
Due this month
1
Due in next 60 days
0
Due later

Deadline Fire Line

Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 6 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (4)Due ≤ 30 days (1)Due ≤ 60 days (1)

Case Difficulty Mix

Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.

5
Hard (31%)
10
Medium (62%)
1
Easy (6%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only10 (62%)
§112 only1 (6%)
Multi-statute (no §101)5 (31%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

10
Life Sciences
62% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
5
Semiconductors
31% of docket
0
Mechanical / Eng
0% of docket
1
Business / Other
6% of docket

Time-on-OA Estimate

Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.

160 h
Manual time on pending OAs
32 h
Time saved (low, 20%)
56 h
Time saved (mid, 35%)
1.4 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
CHEN, KEATH T 2 30.2% +24.7%
GATES, BRADFORD M 1 74.8% +23.8%
MACARTHUR, SYLVIA 1 65.9% +25.7%
WALTERS JR, ROBERT S 1 51.6% +50.4%
DANG, PHUC T 1 95.5% +1.4%
SEDOROOK, DAVID PAUL 1 91.8% +7.1%
MICKEY, TERESA NICOLE 1 100.0% +0.0%
GAMBETTA, KELLY M 1 71.8% +33.0%
MILLER, JR, JOSEPH ALBERT 1 68.5% +16.2%
TRAN, TONY 1 70.2% +33.3%

Quick Wins (1)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
18848963 CAPACITOR ELECTRODE FORMING METHOD DANG, PHUC T —

Hard Cases (5)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 5 ordered by deadline are shown.

App #TitleExaminerDue in
18032518 SUBSTRATE TREATMENT APPARATUS CHEN, KEATH T 28d overdue
18021554 SUBSTRATE PROCESSING METHOD TADAYYON ESLAMI, TABASSOM 9d
19161687 METHOD OF FORMING GALLIUM OXIDE LAYER ON SUBSTRATE GATES, BRADFORD M —
18845921 THIN FILM TRANSISTOR AND MANUFACTURING METHOD THEREFOR SEDOROOK, DAVID PAUL —
18833873 DIELECTRIC FILM, CAPACITOR COMPRISING SAME AND MANUFACTURING METHODS THEREFOR MICKEY, TERESA NICOLE —

Interview Candidates (8)

Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 8 ordered by deadline are shown.

App #TitleExaminerDue in
18032518 SUBSTRATE TREATMENT APPARATUS CHEN, KEATH T 28d overdue
18648334 ELECTRODE CONNECTION ELEMENT, LIGHT-EMITTING DEVICE COMPRISING SAME, AND METHOD FOR PRODUCING LIGHT-EMITTING DEVICE TRAN, TONY 16d overdue
17792706 SUBSTRATE PROCESSING DEVICE AND SUBSTRATE PROCESSING METHOD CHEN, KEATH T 3d overdue
19161687 METHOD OF FORMING GALLIUM OXIDE LAYER ON SUBSTRATE GATES, BRADFORD M —
18984967 SUBSTRATE PROCESSING APPARATUS MACARTHUR, SYLVIA —
18901671 GAS SUPPLY METHOD OF SUBSTRATE PROCESSING APPARATUS WALTERS JR, ROBERT S —
18569210 METHOD OF MANUFACTURING POWER SEMICONDUCTOR ELEMENT GAMBETTA, KELLY M —
18726395 APPARATUS FOR PROCESSING SUBSTRATE MILLER, JR, JOSEPH ALBERT —

Top Art Units

Art UnitApps
1716 4
2897 2
1718 2
1713 1
1717 1
2812 1
1712 1
2893 1
1714 1
2896 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19161687 METHOD OF FORMING GALLIUM OXIDE LAYER ON SUBSTRATE GATES, BRADFORD M 1713 §102§103§112 Non-Final OA — Pending Sep 02, 2025
18984967 SUBSTRATE PROCESSING APPARATUS MACARTHUR, SYLVIA 1716 §103 Final Rejection — Pending Dec 17, 2024
18901671 GAS SUPPLY METHOD OF SUBSTRATE PROCESSING APPARATUS WALTERS JR, ROBERT S 1717 §112 Final Rejection — Pending Sep 30, 2024
18848963 CAPACITOR ELECTRODE FORMING METHOD DANG, PHUC T 2897 §103 Non-Final OA — Pending Sep 20, 2024
18845921 THIN FILM TRANSISTOR AND MANUFACTURING METHOD THEREFOR SEDOROOK, DAVID PAUL — §102§103 Non-Final OA — Pending Sep 11, 2024
18833873 DIELECTRIC FILM, CAPACITOR COMPRISING SAME AND MANUFACTURING METHODS THEREFOR MICKEY, TERESA NICOLE 2897 §102§103 Non-Final OA — Pending Jul 26, 2024
18569210 METHOD OF MANUFACTURING POWER SEMICONDUCTOR ELEMENT GAMBETTA, KELLY M 2812 §103 Non-Final OA — Pending Jul 15, 2024
18726395 APPARATUS FOR PROCESSING SUBSTRATE MILLER, JR, JOSEPH ALBERT 1712 §103 Non-Final OA — Pending Jul 02, 2024
18648334 ELECTRODE CONNECTION ELEMENT, LIGHT-EMITTING DEVICE COMPRISING SAME, AND METHOD FOR PRODUCING LIGHT-EMITTING DEVICE TRAN, TONY 2893 §103 Final Rejection 16d overdue Pending Apr 27, 2024
18286359 SUBSTRATE PROCESSING METHOD AND SUBSTRATE PROCESSING DEVICE BRATLAND JR, KENNETH A 1714 §103 Non-Final OA 57d Pending Oct 10, 2023
18032518 SUBSTRATE TREATMENT APPARATUS CHEN, KEATH T 1716 §102§103 Final Rejection 28d overdue Pending Apr 18, 2023
18021554 SUBSTRATE PROCESSING METHOD TADAYYON ESLAMI, TABASSOM 1718 §102§103 Non-Final OA 9d Pending Feb 15, 2023
18020924 SUBSTRATE TREATMENT APPARATUS LUND, JEFFRIE ROBERT 1716 §103 Final Rejection 4d overdue Pending Feb 10, 2023
18050155 SUBSTRATE PROCESSING APPARATUS REYES, JOSHUA NATHANIEL PI 1718 §103 Final Rejection — Pending Oct 27, 2022
17917547 SUBSTRATE PROCESSING DEVICE AND METHOD KENDALL, BENJAMIN R 2896 §103 Final Rejection — Pending Oct 06, 2022
17792706 SUBSTRATE PROCESSING DEVICE AND SUBSTRATE PROCESSING METHOD CHEN, KEATH T 1716 §103 Final Rejection 3d overdue Pending Jul 13, 2022

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Frequently Asked Questions

How many pending USPTO office actions does Jusung Engineering Co., Ltd. have?

Jusung Engineering Co., Ltd. has 16 pending office actions as of October 2026, spread across 10 art units and 15 examiners.

Which USPTO examiner handles the most Jusung Engineering Co., Ltd. applications?

Keath T Chen has the most, with 2 of Jusung Engineering Co., Ltd.'s pending office actions.

What technology area are Jusung Engineering Co., Ltd.'s patent applications in?

Mostly Chemistry & Materials (USPTO Tech Center 1700), based on where its pending office actions are examined.

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