Prosecution Insights
Last updated: October 02, 2026

Mitsubishi Materials Corporation

Technology area: Chemistry & Materials

22 pending office actions • 12 art units • 19 examiners • 0 of 22 (0%) have an AI response strategy ready • 25 patents granted in the last 365 days

Analysis

Mitsubishi Materials Corporation manages a portfolio with 24 pending office actions, primarily situated within the Chemistry & Materials technology area. These 24 actions are distributed among 19 distinct examiners, indicating a broad range of individual perspectives reviewing the company's applications. The prosecution spans 13 distinct art units, which demonstrates significant technical diversity in the subject matter being pursued within the Chemistry & Materials sector.

The busiest examiner for the portfolio is RUFO, RYAN C, who is currently handling 3 pending office actions. This count of 3 actions is a small fraction of the total 24 pending office actions, suggesting that the workload is highly decentralized across the 19 distinct examiners. Practitioners should note that while 13 distinct art units are involved, no single examiner, including RUFO, RYAN C, maintains a dominant share of the pending matters. This distribution suggests that the company's intellectual property strategy requires engagement with a wide variety of office personnel.

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

Portfolio Summary

22
Total Pending OAs
15
Non-Final OAs
6
Final Rejections
1
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 5 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

1
Overdue
1
Due this week
2
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. 5 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (1)Due ≤ 7 days (1)Due ≤ 30 days (2)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.

12
Hard (55%)
10
Medium (45%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only8 (36%)
Double-patenting + other2 (9%)
Multi-statute (no §101)12 (55%)

Industry Mix

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

12
Life Sciences
55% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
1
Semiconductors
5% of docket
4
Mechanical / Eng
18% of docket
5
Business / Other
23% 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.

220 h
Manual time on pending OAs
44 h
Time saved (low, 20%)
77 h
Time saved (mid, 35%)
1.9 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
WANG, XIAOBEI 2 65.4% +48.3%
HORGER, KIM S. 2 70.7% +20.0%
RUFO, RYAN C 2 58.9% +40.8%
WONG, EDNA 1 58.4% -19.7%
PLESZCZYNSKA, JOANNA 1 54.4% +28.0%
VU, JIMMY T 1 86.5% +7.5%
WYROUGH, PAUL CHRISTIAN ST 1 58.1% +34.8%
GAY, JENNIFER HAWKINS 1 85.1% +8.6%
DILLON, DANIEL P 1 26.2% +29.9%
SHAMS, NAZMUN NAHAR 1 80.6% +18.4%

Hard Cases (13)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 8 ordered by deadline are shown.

App #TitleExaminerDue in
17911543 METHOD FOR PRODUCING LITHIUM SULFIDE CORALLO, CATRIONA MARY 9d
18276112 Li RECOVERY METHOD AND RECOVERY APPARATUS SMOOT, MORIAH SIMONE MCMIL 28d
18725170 SURFACE-COATED CUTTING TOOL WANG, XIAOBEI —
18858894 SILICON MEMBER AND SILICON MEMBER PRODUCTION METHOD WANG, XIAOBEI —
18852365 SURFACE-COATED CUTTING TOOL HORGER, KIM S. —
18851099 TURNING TOOL RUFO, RYAN C —
18848223 SURFACE-COATED CUTTING TOOL PLESZCZYNSKA, JOANNA —
18847790 HEAT TRANSFER MEMBER, METHOD FOR MANUFACTURING HEAT TRANSFER MEMBER, AND PLASMA TREATMENT DEVICE VU, JIMMY T —

Interview Candidates (10)

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
18725170 SURFACE-COATED CUTTING TOOL WANG, XIAOBEI —
18858894 SILICON MEMBER AND SILICON MEMBER PRODUCTION METHOD WANG, XIAOBEI —
18852365 SURFACE-COATED CUTTING TOOL HORGER, KIM S. —
18851099 TURNING TOOL RUFO, RYAN C —
18848223 SURFACE-COATED CUTTING TOOL PLESZCZYNSKA, JOANNA —
18844162 METHOD FOR SEPARATING COBALT AND NICKEL WYROUGH, PAUL CHRISTIAN ST —
18832941 WIRE MESH LAMINATED POROUS MATERIAL AND PIPES CONTAINING POROUS MATERIAL DILLON, DANIEL P —
18708917 COPPER ALLOY, PLASTIC WORKED COPPER ALLOY MATERIAL, COMPONENT FOR ELECTRONIC/ELECTRICAL DEVICES, TERMINAL, BUS BAR, LEAD FRAME AND HEAT DISSIPATION SUBSTRATE SHAMS, NAZMUN NAHAR —

Top Art Units

Art UnitApps
3722 3
1795 2
1784 2
1738 2
2844 1
1723 1
3619 1
1783 1
1734 1
1733 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19071295 TIN ALLOY PLATING SOLUTION WONG, EDNA 1795 §103 Non-Final OA 41d Pending Mar 05, 2025
18725170 SURFACE-COATED CUTTING TOOL WANG, XIAOBEI — §102§103 Non-Final OA — Pending Jan 02, 2025
18858894 SILICON MEMBER AND SILICON MEMBER PRODUCTION METHOD WANG, XIAOBEI 1784 §102§112 Non-Final OA — Pending Oct 22, 2024
18852365 SURFACE-COATED CUTTING TOOL HORGER, KIM S. — §102§112 Non-Final OA — Pending Sep 27, 2024
18851099 TURNING TOOL RUFO, RYAN C 3722 §102§103§112 Non-Final OA — Pending Sep 26, 2024
18848223 SURFACE-COATED CUTTING TOOL PLESZCZYNSKA, JOANNA — §103§112 Non-Final OA — Pending Sep 18, 2024
18847790 HEAT TRANSFER MEMBER, METHOD FOR MANUFACTURING HEAT TRANSFER MEMBER, AND PLASMA TREATMENT DEVICE VU, JIMMY T 2844 §103§112 Non-Final OA — Pending Sep 17, 2024
18844162 METHOD FOR SEPARATING COBALT AND NICKEL WYROUGH, PAUL CHRISTIAN ST 1723 §103 Final Rejection — Pending Sep 05, 2024
18836874 WIRE MESH LAMINATED POROUS MATERIAL AND PIPES CONTAINING POROUS MATERIAL GAY, JENNIFER HAWKINS 3619 §102§112 Non-Final OA — Pending Aug 08, 2024
18832941 WIRE MESH LAMINATED POROUS MATERIAL AND PIPES CONTAINING POROUS MATERIAL DILLON, DANIEL P 1783 §103 Non-Final OA — Pending Jul 25, 2024
18708917 COPPER ALLOY, PLASTIC WORKED COPPER ALLOY MATERIAL, COMPONENT FOR ELECTRONIC/ELECTRICAL DEVICES, TERMINAL, BUS BAR, LEAD FRAME AND HEAT DISSIPATION SUBSTRATE SHAMS, NAZMUN NAHAR — §102§103 Non-Final OA — Pending May 09, 2024
18574457 METHOD FOR PRODUCING CARBON AND HYDROGEN, CARBON MATERIAL, REDUCING AGENT, AND METHOD FOR DECOMPOSING CARBON DIOXIDE FORREST, MICHAEL — §102§103DP Non-Final OA — Pending Dec 27, 2023
18284636 TITANIUM SUBSTRATE MATERIAL, ELECTRODE FOR WATER ELECTROLYSIS, AND SOLID POLYMER WATER ELECTROLYSIS DEVICE HORGER, KIM S. 1795 §103 Non-Final OA — Pending Sep 28, 2023
18283333 TURNING TOOL ADDISU, SARA 3722 §103 Final Rejection 6d Pending Sep 21, 2023
18281831 SURFACE-COATED CUTTING TOOL DUMBRIS, SETH M 1784 §103Other Non-Final OA — Pending Sep 13, 2023
18277115 VALUABLE METAL RECOVERY METHOD AND RECOVERY APPARATUS YANG, JIE 1734 §103DP Final Rejection — Pending Aug 14, 2023
18276112 Li RECOVERY METHOD AND RECOVERY APPARATUS SMOOT, MORIAH SIMONE MCMIL 1733 §102§103§112 Final Rejection 28d Pending Aug 07, 2023
18274572 BONDING PASTE, BONDING LAYER, BONDED BODY, AND METHOD FOR PRODUCING BONDED BODY POLLOCK, AUSTIN M 1738 §103 Final Rejection — Pending Jul 27, 2023
18272848 METHOD FOR PRODUCING CARBON MATERIAL, CARBON MATERIAL, METHOD FOR DECOMPOSING CARBON DIOXIDE, AND REDUCING AGENT MCCRACKEN, DANIEL 1736 §103 Non-Final OA 46d overdue Pending Jul 18, 2023
18268451 METHOD FOR RECOVERING LEAD FROM COPPER SMELTING DUST PIRO, NICHOLAS ANTHONY 1738 §103§112 Non-Final OA — Pending Jun 20, 2023
17911543 METHOD FOR PRODUCING LITHIUM SULFIDE CORALLO, CATRIONA MARY 1732 §103§112 Final Rejection 9d Pending Sep 14, 2022
17625170 DRILL RUFO, RYAN C 3722 §103§112 Non-Final OA — Pending Jan 06, 2022

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