Where does Mitsui Mining & Smelting Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Mitsui Mining & Smelting Co., Ltd. ranks #1,623 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Mitsui Mining & Smelting Co., Ltd. hold?

Mitsui Mining & Smelting Co., Ltd. holds 254 US utility patents granted between 2015 and 2025, spanning 75 technology areas.

What is Mitsui Mining & Smelting Co., Ltd.'s Innovation Score?

Mitsui Mining & Smelting Co., Ltd. has an Innovation Score of 56.5 out of 100 (top 6% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Mitsui Mining & Smelting Co., Ltd.'s patent grant rate increasing or decreasing?

Mitsui Mining & Smelting Co., Ltd.'s recent grant velocity is +3% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Mitsui Mining & Smelting Co., Ltd.'s patents?

Mitsui Mining & Smelting Co., Ltd.'s patents average 10.8 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Mitsui Mining & Smelting Co., Ltd. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Mitsui Mining & Smelting Co., Ltd.

Q: What technology areas does Mitsui Mining & Smelting Co., Ltd. focus on?

Mitsui Mining & Smelting Co., Ltd.'s top technology area is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution) with 81 patents, ranking #171 of 5,963 assignees active in that subclass. Grants appear in 75 CPC subclasses total.

USPTO PatentsView assignee record - 254 granted patents across 75 technology areas, recorded in grant years 2015–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Mitsui ranks #1,623 of 49,997 tracked US assignees by granted-patent volume, with 254 patents across 75 technology areas.

#1,623
of 49,997 US assignees by volume: Top 6%
by Innovation Score (56.5/100): 10.8
avg claims per patent: +3%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1623 · Foreign Corporation #1,623 · 254 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MID 254 grants
TOP-DECILE #1,623/49,997
PHOTO-FINISH Shin-etsu Handotai
CPC-WIDE Y02E · 75 areas
INNOV-PAR 56.5/100
CLAIMS-PAR 10.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +3% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Shin-etsu Handotai Co., Ltd. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Mitsui’s 56.5 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 19.1 pts (34%) Velocity 5.9 pts (10%) Breadth 25.0 pts (44%) Claim depth 6.5 pts (12%)

Qualcomm Incorporated · highest

85
Huf Hülsbeck &… · near

57
Mitsui Mining &… · this assignee

57
Neutron Holdings · near

57
Sumitomo Electric… · near

57
Vehicle Service Group · near

57
3D Lighting… · lowest

7

What this shows Mitsui's Innovation Score is 56.5/100 (top 6% of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Mitsui?

Each dot is one of Mitsui’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Mitsui’s own 10.8 claims/patent is ABOVE the 10.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Mitsui vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

How Mitsui's grant cadence moved

Between 2020–2024, Mitsui Mining & Smelting Co., Ltd. received 113 grants versus 110 in 2015–2019 (+3% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2019 at 36 grants and bottomed in 2015 at 13. Lead class Y02E accounts for 31.9% of the portfolio across 75 subclasses. Volume neighbours: Memjet Technology Limited (#1,619) and Heidelberger Druckmaschinen AG (#1,627).

Mitsui's three-year grant acceleration

From 2019–2021 to 2022–2024, Mitsui Mining & Smelting Co., Ltd. moved from 79 to 70 grants (0.89x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,530. See the growth leaderboard.

Memjet Technology

255
Merit Medical Sys…

255
Nanjing University

255
Z124

255
Shin-etsu Handotai

254
Mitsui Mining & S… ◀

254
Aruba Networks

253
E Mishan & Sons

253
Heidelberger Druc…

253

What this shows Mitsui holds 254 patents at rank #1,623, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Mitsui

By rank, the assignees closest to #1,623 in granted patent volume.

Leaders in Y02E (Reduction OF Greenhouse GAS [GHG] Emissions)

Other assignees with the most granted patents in Mitsui's primary technology class.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Mitsui, neither rank-band nor same-CPC leaders (those blocks stay above). In Y02E (Reduction OF Greenhouse GAS [GHG] Emissions), Mitsui ranks #171 of 5,963 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (57 here).

Huf Hülsbeck & Fürst GmbH & Co. KG 57 Sumitomo Electric Hardmetal Corp. 57 Neutron Holdings, Inc. 57 Vehicle Service Group, LLC 57

Similar claim depth

Nearest assignees by average claims per patent (10.8 here).

Roland DG Corporation 10.8 avg Sercomm Corporation 10.8 avg Panasonic Intellectual Property Management Co., Ltd. 10.8 avg Shanghai Huahong Grace Semiconductor Manufacturing Corporation 10.8 avg

Mitsui's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

57 Top 6% higher than 94% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Mitsui Mining & Smelting Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	13	5.1%
2016	25	9.8%
2017	22	8.7%
2018	14	5.5%
2019	36	14.2%
2020	23	9.1%
2021	20	7.9%
2022	20	7.9%
2023	20	7.9%
2024	30	11.8%
2025partial year	31	12.2%

Which technologies does Mitsui Mining & Smelting Co., Ltd. patent most?

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 81

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 75

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 66

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 57

B01D - Separation 56

Y02T - Climate Change Mitigation Technologies Related TO Transportation 52

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 52

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 46

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 41

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 41

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 40

C01G - Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f 32

Y10T - Technical Subjects Covered BY Former US Classification 27

H01L - Semiconductor Devices NOT Covered BY Class H10 27

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 24

Top 15 of 75 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Mitsui Mining & Smelting Co., Ltd.'s patent record in context - here's where to go next.

Mitsui Mining & Smelting Co., Ltd.'s lead technology class is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution), 31.9% of its portfolio - see every assignee active in that class. Explore Y02E
Ranked #1,623 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Mitsui Mining & Smelting Co., Ltd. against Memjet Technology Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 56.5/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent , US Patent Intelligence Editorial Process · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.