Technology area: Chemistry & Materials
28 pending office actions • 19 art units • 25 examiners • 0 of 28 (0%) have an AI response strategy ready • 26 patents granted in the last 365 days
Mitsui Mining & Smelting Co., Ltd. has 31 pending office actions in Chemistry & Materials. The portfolio spans 28 distinct examiners and 21 distinct art units, reflecting broad examination coverage with repeated assignments at both the examiner and art-unit levels.
DINH, TUAN T is the busiest examiner, with 2 pending matters. The scale and distribution favor centralized tracking of recurring claim and prior-art themes, combined with examiner-specific response planning. The repeated assignments provide an opportunity to compare treatment across matters without assuming uniform examination outcomes.
Based on the USPTO statutory response window for each pending office action. 9 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.
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. 9 of the docket's apps have a known mailing date.
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.
| Bucket | Cases |
|---|---|
| §103 only | 15 (54%) |
| §102 only | 2 (7%) |
| Double-patenting + other | 2 (7%) |
| Multi-statute (no §101) | 9 (32%) |
How the docket's pending cases split across USPTO tech-center bands.
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.
| Examiner | Apps on this docket | Allow rate | Interview lift |
|---|---|---|---|
| DINH, TUAN T | 2 | 78.9% | +22.0% |
| MCDONOUGH, JAMES E | 2 | 71.2% | +10.9% |
| ZEMUI, NATHANAEL T | 2 | 55.6% | +23.7% |
| PATEL, DEVANG R | 1 | 65.6% | +39.0% |
| YOUNG, WILLIAM D | 1 | 54.4% | +14.5% |
| ALANKO, ANITA KAREN | 1 | 69.9% | -16.1% |
| GODENSCHWAGER, PETER F | 1 | 68.2% | +17.5% |
| MCCLAIN, STARFARI TESHAWN | 1 | 91.2% | -12.5% |
| HERNANDEZ, RITCHIE EVAN | 1 | — | — |
| CHU, YONG LIANG | 1 | 74.9% | +3.2% |
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 # | Title | Examiner | Due in |
|---|---|---|---|
| 18713051 | AMINO COMPOUND-SUPPORTING POROUS SUBSTRATE AND ACIDIC GAS ABSORBENT | MCCLAIN, STARFARI TESHAWN | — |
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 # | Title | Examiner | Due in |
|---|---|---|---|
| 17788562 | SULFIDE SOLID ELECTROLYTE AND METHOD FOR PRODUCING THE SAME | CORNO JR, JAMES ANTHONY JOHN | 100d overdue |
| 18017992 | ACTIVE MATERIAL, METHOD FOR PRODUCING SAME, ELECTRODE MIXTURE AND BATTERY | KERNS, KEVIN P | 8d |
| 19099816 | ACTIVE MATERIAL, METHOD FOR PRODUCING RECYCLED ACTIVE MATERIAL, METHOD FOR TRACKING VALUABLE ELEMENT RECOVERED FROM BATTERY, AND COMPOUND FOR TRACKING | YOUNG, WILLIAM D | — |
| 18840573 | PHOSPHOR AND METHOD FOR PRODUCING SAME | GODENSCHWAGER, PETER F | — |
| 18706623 | METHOD FOR PRODUCING LITHIUM SULFIDE | HERNANDEZ, RITCHIE EVAN | — |
| 18687712 | MANGANESE OXIDE, MANGANESE OXIDE PARTICLES, NEAR-INFRARED TRANSMISSION MATERIAL, AND NEAR-INFRARED TRANSMISSION FILM | CHU, YONG LIANG | — |
| 18279174 | SEPARATION METHOD FOR SEPARATING CONSTITUENT MATERIAL FROM MEMBER AND METHOD FOR PROCESSING MEMBER | BARCENA, CARLOS | — |
| 18278558 | SOLID ELECTROLYTE | DIGNAN, MICHAEL L | — |
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 # | Title | Examiner | Due in |
|---|---|---|---|
| 18277307 | METHOD FOR PRODUCING SULFIDE SOLID ELECTROLYTE | ZEMUI, NATHANAEL T | 5d overdue |
| 18704680 | DOUBLE-SIDED COPPER CLAD LAMINATE, CAPACITOR ELEMENT AND PRINTED WIRING BOARD WITH BUILT-IN CAPACITOR, AND METHOD FOR MANUFACTURING DOUBLE-SIDED COPPER CLAD LAMINATE | DINH, TUAN T | 19d |
| 18836850 | METHOD FOR MANUFACTURING BONDED BODY AND METHOD FOR BONDING BODIES TO BE BONDED | PATEL, DEVANG R | 33d |
| 19099816 | ACTIVE MATERIAL, METHOD FOR PRODUCING RECYCLED ACTIVE MATERIAL, METHOD FOR TRACKING VALUABLE ELEMENT RECOVERED FROM BATTERY, AND COMPOUND FOR TRACKING | YOUNG, WILLIAM D | — |
| 18840573 | PHOSPHOR AND METHOD FOR PRODUCING SAME | GODENSCHWAGER, PETER F | — |
| 18294045 | TUNGSTIC ACID SOLUTION AND METHOD FOR PRODUCING THE SAME, AND TUNGSTEN OXIDE POWDER AND METHOD FOR PRODUCING THE SAME | MCDONOUGH, JAMES E | — |
| 18284714 | EXHAUST GAS PURIFYING CATALYST COMPOSITION AND EXHAUST GAS PURIFYING CATALYST | MCDONOUGH, JAMES E | — |
| 18284643 | MULTILAYER SUBSTRATE MANUFACTURING METHOD AND WIRING SUBSTRATE | DINH, TUAN T | — |
| Art Unit | Apps |
|---|---|
| 1735 | 2 |
| 1767 | 2 |
| 1732 | 2 |
| 2847 | 2 |
| 1734 | 2 |
| 1723 | 2 |
| 1727 | 2 |
| 1752 | 2 |
| 1761 | 1 |
| 1713 | 1 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 18836850 | METHOD FOR MANUFACTURING BONDED BODY AND METHOD FOR BONDING BODIES TO BE BONDED | PATEL, DEVANG R | 1735 | §103 | Final Rejection | 33d | Pending | Mar 07, 2025 |
| 19099816 | ACTIVE MATERIAL, METHOD FOR PRODUCING RECYCLED ACTIVE MATERIAL, METHOD FOR TRACKING VALUABLE ELEMENT RECOVERED FROM BATTERY, AND COMPOUND FOR TRACKING | YOUNG, WILLIAM D | 1761 | §102§103 | Non-Final OA | — | Pending | Jan 30, 2025 |
| 18874893 | POLISHING MATERIAL SLURRY AND POLISHING METHOD OF SAME | ALANKO, ANITA KAREN | 1713 | §102§103DP | Non-Final OA | — | Pending | Dec 13, 2024 |
| 18840573 | PHOSPHOR AND METHOD FOR PRODUCING SAME | GODENSCHWAGER, PETER F | 1767 | §102§103 | Non-Final OA | — | Pending | Aug 22, 2024 |
| 18713051 | AMINO COMPOUND-SUPPORTING POROUS SUBSTRATE AND ACIDIC GAS ABSORBENT | MCCLAIN, STARFARI TESHAWN | 1736 | §103 | Non-Final OA | — | Pending | May 23, 2024 |
| 18706623 | METHOD FOR PRODUCING LITHIUM SULFIDE | HERNANDEZ, RITCHIE EVAN | 1732 | §103§112Other | Non-Final OA | — | Pending | May 01, 2024 |
| 18704680 | DOUBLE-SIDED COPPER CLAD LAMINATE, CAPACITOR ELEMENT AND PRINTED WIRING BOARD WITH BUILT-IN CAPACITOR, AND METHOD FOR MANUFACTURING DOUBLE-SIDED COPPER CLAD LAMINATE | DINH, TUAN T | 2847 | §102 | Final Rejection | 19d | Pending | Apr 25, 2024 |
| 18687712 | MANGANESE OXIDE, MANGANESE OXIDE PARTICLES, NEAR-INFRARED TRANSMISSION MATERIAL, AND NEAR-INFRARED TRANSMISSION FILM | CHU, YONG LIANG | 1731 | §102§103§112 | Non-Final OA | — | Pending | Feb 28, 2024 |
| 18684096 | HYDROGEN STORAGE ALLOY | LIANG, ANTHONY M | 1734 | §103 | Non-Final OA | — | Pending | Feb 15, 2024 |
| 18294045 | TUNGSTIC ACID SOLUTION AND METHOD FOR PRODUCING THE SAME, AND TUNGSTEN OXIDE POWDER AND METHOD FOR PRODUCING THE SAME | MCDONOUGH, JAMES E | — | §103 | Final Rejection | — | Pending | Jan 31, 2024 |
| 18284714 | EXHAUST GAS PURIFYING CATALYST COMPOSITION AND EXHAUST GAS PURIFYING CATALYST | MCDONOUGH, JAMES E | 1734 | §103 | Non-Final OA | — | Pending | Sep 28, 2023 |
| 18284643 | MULTILAYER SUBSTRATE MANUFACTURING METHOD AND WIRING SUBSTRATE | DINH, TUAN T | 2847 | §103 | Non-Final OA | — | Pending | Sep 28, 2023 |
| 18284710 | EXHAUST GAS PURIFYING CATALYST COMPOSITION AND EXHAUST GAS PURIFYING CATALYST | LALISSE, REMY FREDERIC | 1732 | §103 | Final Rejection | 22d | Pending | Sep 28, 2023 |
| 18279458 | MULTILAYER BODY | WASHVILLE, JEFFREY D | 1766 | §103 | Non-Final OA | — | Pending | Aug 30, 2023 |
| 18279350 | PHOSPHOR, METHOD FOR PRODUCING SAME, LIGHT EMITTING ELEMENT CONTAINING PHOSPHOR, AND LIGHT EMITTING DEVICE | OYER, ANDREW J | 1767 | §102§103DP | Final Rejection | — | Pending | Aug 29, 2023 |
| 18279174 | SEPARATION METHOD FOR SEPARATING CONSTITUENT MATERIAL FROM MEMBER AND METHOD FOR PROCESSING MEMBER | BARCENA, CARLOS | 1723 | §102§103 | Final Rejection | — | Pending | Aug 28, 2023 |
| 18278558 | SOLID ELECTROLYTE | DIGNAN, MICHAEL L | 1723 | §103§112 | Final Rejection | — | Pending | Aug 23, 2023 |
| 18277512 | SOLID ELECTROLYTE AND METHOD FOR PRODUCING SAME | ZEMUI, NATHANAEL T | 1727 | §102 | Final Rejection | — | Pending | Aug 16, 2023 |
| 18277307 | METHOD FOR PRODUCING SULFIDE SOLID ELECTROLYTE | ZEMUI, NATHANAEL T | 1727 | §103 | Final Rejection | 5d overdue | Pending | Aug 15, 2023 |
| 18274615 | APPARATUSES AND METHODS FOR PRODUCING SOL, GEL AND SILICA POROUS BODY | SEIFU, LESSANEWORK T | 1774 | §102§103 | Final Rejection | — | Pending | Jul 27, 2023 |
| 18018214 | HYDROCARBON ADSORPTION MATERIAL, EXHAUST GAS CLEANING CATALYST, AND EXHAUST GAS CLEANING SYSTEM | JOHNSON, CHRISTINA ANN | 1759 | §103 | Final Rejection | — | Pending | Jan 26, 2023 |
| 18017992 | ACTIVE MATERIAL, METHOD FOR PRODUCING SAME, ELECTRODE MIXTURE AND BATTERY | KERNS, KEVIN P | 1735 | §102§103 | Non-Final OA | 8d | Pending | Jan 25, 2023 |
| 18008846 | METHOD FOR PRODUCING LITHIUM SULFIDE | PATEL, SUHANI JITENDRA | 1783 | §103 | Final Rejection | 9d | Pending | Dec 07, 2022 |
| 18075690 | Sulfide Solid Electrolyte | CHUO, TONY SHENG HSIANG | 1751 | §103 | Non-Final OA | 67d overdue | Pending | Dec 06, 2022 |
| 17987974 | Active Material, Positive Electrode Mixture Using Same, And Solid-State Battery | AMPONSAH, OSEI K | 1752 | §103 | Final Rejection | — | Pending | Nov 16, 2022 |
| 17923277 | SOLID ELECTROLYTE, ELECTRODE MIXTURE AND BATTERY | JOHNSON, JONATHAN J | 1700 | §103 | Final Rejection | — | Pending | Nov 04, 2022 |
| 17788562 | SULFIDE SOLID ELECTROLYTE AND METHOD FOR PRODUCING THE SAME | CORNO JR, JAMES ANTHONY JOHN | 1722 | §102§103 | Non-Final OA | 100d overdue | Pending | Jun 23, 2022 |
| 17434190 | SULFIDE SOLID ELECTROLYTE | NGUYEN, KEVIN NMN | 1752 | §103 | Final Rejection | 66d overdue | Pending | Aug 26, 2021 |
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Start Free TrialMitsui Mining & Smelting Co., Ltd. has 28 pending office actions as of October 2026, spread across 19 art units and 25 examiners.
Tuan T Dinh has the most, with 2 of Mitsui Mining & Smelting Co., Ltd.'s pending office actions.
Mostly Chemistry & Materials (USPTO Tech Center 1700), based on where its pending office actions are examined.
