Prosecution Insights
Last updated: October 25, 2026

Hitachi Industrial Equipment Systems Co., Ltd.

Technology areas: Semiconductors, Circuits & Optics • Medical Devices & Mechanical Engineering

18 pending office actions • 10 art units • 17 examiners • 0 of 18 (0%) have an AI response strategy ready • 30 patents granted in the last 365 days

Analysis

Hitachi Industrial Equipment Systems Co., Ltd. has 20 pending office actions in Medical Devices & Mechanical Engineering. The docket spans 19 distinct examiners and 12 distinct art units, indicating broad examiner coverage with some matters sharing an art-unit setting.

JARIWALA, CHIRAG is the busiest examiner, with 2 pending matters. The limited concentration suggests that most prosecution decisions must be tailored at the matter level. Practitioners can use the art-unit grouping to compare related examination contexts while preserving examiner-specific response planning.

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

Portfolio Summary

18
Total Pending OAs
14
Non-Final OAs
4
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 3 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

1
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. 3 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (1)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.

6
Hard (33%)
11
Medium (61%)
1
Easy (6%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other2 (11%)
§103 only7 (39%)
§102 only4 (22%)
§112 only1 (6%)
Multi-statute (no §101)4 (22%)

Industry Mix

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

0
Life Sciences
0% of docket
0
Information Tech
0% of docket
3
Communications
17% of docket
6
Semiconductors
33% of docket
9
Mechanical / Eng
50% of docket
0
Business / Other
0% 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.

180 h
Manual time on pending OAs
36 h
Time saved (low, 20%)
63 h
Time saved (mid, 35%)
1.6 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
JARIWALA, CHIRAG 2 62.1% +27.5%
ZOLLINGER, NATHAN C 1 69.6% +40.0%
DOUNIS, LAERT 1 67.9% +20.8%
FREAY, CHARLES GRANT 1 77.0% +30.3%
ELCHANTI, ZEINA 1 64.5% +24.9%
GUGGER, SEAN A 1 64.9% +23.2%
DOTTIN, DARRYL V 1 79.7% +12.9%
SHENDEROV, ALEXANDER D 1 90.3% +6.2%
HANSEN, KENNETH J 1 81.2% +7.5%
ZIMMERMANN, JOHN P 1 82.7% +19.5%

Quick Wins (3)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
19104737 Inkjet Recording Device SHENDEROV, ALEXANDER D —
19101313 SCROLL-TYPE FLUID MACHINE HANSEN, KENNETH J —
18996379 Inkjet Printer and Printing System of Inkjet Printer ZIMMERMANN, JOHN P —

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
19153367 Compressed Air Energy Storage Device DOUNIS, LAERT —
19150251 Air Compressor FREAY, CHARLES GRANT —
19113190 Fee Calculation System and Fee Calculation Method ELCHANTI, ZEINA —
18881389 Printer System and Control Method for Printer System YIP, KENT —
18578798 STOCK MANAGEMENT SYSTEM AND STOCK MANAGEMENT METHOD TUTOR, AARON N —
18238841 Inkjet Recording Device and Method for Controlling Inkjet Recording Device VALENCIA, ALEJANDRO —

Interview Candidates (9)

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
18026258 PACKAGED COMPRESSOR JARIWALA, CHIRAG 5d overdue
19166195 Maintenance Method for Scroll Fluid Machine, and Scroll Fluid Machine ZOLLINGER, NATHAN C —
19153367 Compressed Air Energy Storage Device DOUNIS, LAERT —
19150251 Air Compressor FREAY, CHARLES GRANT —
19113190 Fee Calculation System and Fee Calculation Method ELCHANTI, ZEINA —
19111081 Compressed Air Energy Storage Device and Heat Pump Device GUGGER, SEAN A —
19106858 Inkjet Recording Device DOTTIN, DARRYL V —
18996379 Inkjet Printer and Printing System of Inkjet Printer ZIMMERMANN, JOHN P —

Top Art Units

Art UnitApps
3746 6
2853 4
3628 1
2834 1
2683 1
2681 1
2667 1
3627 1
2858 1
3783 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19166195 Maintenance Method for Scroll Fluid Machine, and Scroll Fluid Machine ZOLLINGER, NATHAN C 3746 §102 Non-Final OA — Pending Sep 17, 2025
19153367 Compressed Air Energy Storage Device DOUNIS, LAERT 3746 §102§103 Final Rejection — Pending Aug 04, 2025
19150251 Air Compressor FREAY, CHARLES GRANT 3746 §103§112 Non-Final OA — Pending Jul 23, 2025
19113190 Fee Calculation System and Fee Calculation Method ELCHANTI, ZEINA 3628 §101§102 Non-Final OA — Pending Mar 19, 2025
19111081 Compressed Air Energy Storage Device and Heat Pump Device GUGGER, SEAN A 2834 §103 Non-Final OA — Pending Mar 12, 2025
19106858 Inkjet Recording Device DOTTIN, DARRYL V 2683 §102 Non-Final OA — Pending Feb 26, 2025
19104737 Inkjet Recording Device SHENDEROV, ALEXANDER D 2853 §102 Non-Final OA — Pending Feb 19, 2025
19101313 SCROLL-TYPE FLUID MACHINE HANSEN, KENNETH J 3746 §102 Non-Final OA — Pending Feb 05, 2025
18996379 Inkjet Printer and Printing System of Inkjet Printer ZIMMERMANN, JOHN P 2853 §103 Non-Final OA — Pending Jan 17, 2025
18881389 Printer System and Control Method for Printer System YIP, KENT 2681 §102§112 Non-Final OA — Pending Jan 06, 2025
18560652 Inkjet Marking Apparatus and Inkjet Marking System SHAH, MANISH S 2853 §103 Non-Final OA — Pending Dec 20, 2024
18876223 Inspection Device and Method CODRINGTON, SHANE WRENSFORD 2667 §103 Non-Final OA — Pending Dec 18, 2024
18578798 STOCK MANAGEMENT SYSTEM AND STOCK MANAGEMENT METHOD TUTOR, AARON N 3627 §101§103 Final Rejection — Pending Jan 12, 2024
18238841 Inkjet Recording Device and Method for Controlling Inkjet Recording Device VALENCIA, ALEJANDRO 2853 §103§112 Non-Final OA — Pending Aug 28, 2023
18026258 PACKAGED COMPRESSOR JARIWALA, CHIRAG 3746 §103 Final Rejection 5d overdue Pending Mar 14, 2023
18010255 Power Conversion Device and Remote Monitoring System NYAMOGO, JOSEPH A 2858 §103 Non-Final OA 8d Pending Dec 14, 2022
17419415 Compressor BRANDT, DAVID NELSON 3783 §112 Non-Final OA 42d Pending Jun 29, 2021
16495866 Liquid-Feed-Type Gas Compressor JARIWALA, CHIRAG 3746 §103 Final Rejection — Pending Sep 20, 2019

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Frequently Asked Questions

How many pending USPTO office actions does Hitachi Industrial Equipment Systems Co., Ltd. have?

Hitachi Industrial Equipment Systems Co., Ltd. has 18 pending office actions as of October 2026, spread across 10 art units and 17 examiners.

Which USPTO examiner handles the most Hitachi Industrial Equipment Systems Co., Ltd. applications?

Chirag Jariwala has the most, with 2 of Hitachi Industrial Equipment Systems Co., Ltd.'s pending office actions.

What technology area are Hitachi Industrial Equipment Systems Co., Ltd.'s patent applications in?

Mostly Medical Devices & Mechanical Engineering (USPTO Tech Center 3700), based on where its pending office actions are examined.

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