Prosecution Insights
Last updated: October 02, 2026

SUMCO Corporation

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

9 pending office actions • 6 art units • 9 examiners • 0 of 9 (0%) have an AI response strategy ready • 30 patents granted in the last 365 days

Analysis

SUMCO Corporation has 10 pending office actions in the Chemistry & Materials technology area. These actions are spread across 10 distinct examiners and 6 distinct art units. KASENGE, CHARLES R is the busiest examiner, with 1 pending action.

The 10 pending office actions are distributed among 6 distinct art units, showing a range of chemistry and materials classifications. Each of the 10 distinct examiners is responsible for exactly 1 action. KASENGE, CHARLES R, as the busiest examiner, handles 1 pending action, indicating that no single examiner is managing multiple pending matters for the company. This ratio of 10 pending office actions to 10 distinct examiners suggests a fragmented prosecution environment. Practitioners should be aware that the 6 distinct art units involved will likely apply different standards or timelines to the various matters within the Chemistry & Materials sector.

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

Portfolio Summary

9
Total Pending OAs
6
Non-Final OAs
3
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 2 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

2
Overdue
0
Due this week
0
Due this month
0
Due in next 60 days
0
Due later

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.

6
Hard (67%)
3
Medium (33%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other2 (22%)
§103 only3 (33%)
Multi-statute (no §101)4 (44%)

Industry Mix

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

2
Life Sciences
22% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
2
Semiconductors
22% of docket
2
Mechanical / Eng
22% of docket
3
Business / Other
33% 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.

90 h
Manual time on pending OAs
18 h
Time saved (low, 20%)
31 h
Time saved (mid, 35%)
0.8 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
KASENGE, CHARLES R 1 84.0% +13.8%
KENIRY, HEATHER J 1 81.0% +19.5%
KOETH, MICHELLE M 1 76.7% +16.5%
HENRY, CALEB E 1 86.8% +6.0%
SHUM, KENT N 1 37.7% +50.3%
AYALEW, TINSAE B 1 75.8% +9.1%
CHEN, DAVID Z 1 44.7% +50.1%
CRAMER, HALEE PAIGE 1 74.2% +6.5%
QI, HUA 1 56.6% +23.1%

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
19008977 SUBSTRATE TRANSPORT SYSTEM KENIRY, HEATHER J —

Hard Cases (6)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 6 ordered by deadline are shown.

App #TitleExaminerDue in
17996737 SINGLE CRYSTAL PRODUCTION APPARATUS AND SINGLE CRYSTAL PRODUCTION METHOD QI, HUA 18d overdue
18992276 MANAGEMENT DEVICE, MANAGEMENT METHOD, AND WAFER MANUFACTURING SYSTEM KASENGE, CHARLES R —
18862214 WAFER DETERMINATION METHOD, DETERMINATION PROGRAM, DETERMINATION APPARATUS, WAFER PRODUCTION METHOD, AND WAFER KOETH, MICHELLE M —
18738678 LOW RESISTIVITY WAFER HENRY, CALEB E —
18568469 DOUBLE-SIDE POLISHING METHOD FOR WORK AND DOUBLE-SIDE POLISHING APPARATUS FOR WORK SHUM, KENT N —
18561531 SEMICONDUCTOR WAFER CLEANING DEVICE, SEMICONDUCTOR WAFER CLEANING METHOD, AND METHOD FOR MANUFACTURING SILICON WAFER AYALEW, TINSAE B —

Interview Candidates (6)

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 6 ordered by deadline are shown.

App #TitleExaminerDue in
18314973 SILICON WAFER AND EPITAXIAL SILICON WAFER CHEN, DAVID Z 23d overdue
17996737 SINGLE CRYSTAL PRODUCTION APPARATUS AND SINGLE CRYSTAL PRODUCTION METHOD QI, HUA 18d overdue
18992276 MANAGEMENT DEVICE, MANAGEMENT METHOD, AND WAFER MANUFACTURING SYSTEM KASENGE, CHARLES R —
19008977 SUBSTRATE TRANSPORT SYSTEM KENIRY, HEATHER J —
18862214 WAFER DETERMINATION METHOD, DETERMINATION PROGRAM, DETERMINATION APPARATUS, WAFER PRODUCTION METHOD, AND WAFER KOETH, MICHELLE M —
18568469 DOUBLE-SIDE POLISHING METHOD FOR WORK AND DOUBLE-SIDE POLISHING APPARATUS FOR WORK SHUM, KENT N —

Top Art Units

Art UnitApps
3657 1
3723 1
1711 1
2815 1
2891 1
1714 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18992276 MANAGEMENT DEVICE, MANAGEMENT METHOD, AND WAFER MANUFACTURING SYSTEM KASENGE, CHARLES R — §101§102 Non-Final OA — Pending Jan 08, 2025
19008977 SUBSTRATE TRANSPORT SYSTEM KENIRY, HEATHER J 3657 §103 Final Rejection — Pending Jan 03, 2025
18862214 WAFER DETERMINATION METHOD, DETERMINATION PROGRAM, DETERMINATION APPARATUS, WAFER PRODUCTION METHOD, AND WAFER KOETH, MICHELLE M — §101§102§103 Non-Final OA — Pending Nov 01, 2024
18738678 LOW RESISTIVITY WAFER HENRY, CALEB E — §102§112 Non-Final OA — Pending Jun 10, 2024
18568469 DOUBLE-SIDE POLISHING METHOD FOR WORK AND DOUBLE-SIDE POLISHING APPARATUS FOR WORK SHUM, KENT N 3723 §102§103§112 Final Rejection — Pending Dec 08, 2023
18561531 SEMICONDUCTOR WAFER CLEANING DEVICE, SEMICONDUCTOR WAFER CLEANING METHOD, AND METHOD FOR MANUFACTURING SILICON WAFER AYALEW, TINSAE B 1711 §102§103§112 Non-Final OA — Pending Nov 16, 2023
18314973 SILICON WAFER AND EPITAXIAL SILICON WAFER CHEN, DAVID Z 2815 §103 Non-Final OA 23d overdue Pending May 10, 2023
17979879 SILICON WAFER AND EPITAXIAL SILICON WAFER CRAMER, HALEE PAIGE 2891 §103 Non-Final OA — Pending Nov 03, 2022
17996737 SINGLE CRYSTAL PRODUCTION APPARATUS AND SINGLE CRYSTAL PRODUCTION METHOD QI, HUA 1714 §103§112 Final Rejection 18d overdue Pending Oct 20, 2022

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