Where does Japan Steel Works M&E, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Japan Steel Works M&E, Inc. ranks #41,080 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 Japan Steel Works M&E, Inc. hold?

Japan Steel Works M&E, Inc. holds 6 US utility patents granted between 2021 and 2024, spanning 10 technology areas.

What is Japan Steel Works M&E, Inc.'s Innovation Score?

Japan Steel Works M&E, Inc. has an Innovation Score of 43.2 out of 100 (top 29% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Japan Steel Works M&E, Inc.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Japan Steel Works M&E, Inc..

What does claim depth mean for Japan Steel Works M&E, Inc.'s patents?

Japan Steel Works M&E, Inc.'s patents average 8.8 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 Japan Steel Works M&E, Inc. 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

Japan Steel Works M&E, Inc.

Q: What technology areas does Japan Steel Works M&E, Inc. focus on?

Japan Steel Works M&E, Inc.'s top technology area is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution) with 3 patents, ranking #2,995 of 5,963 assignees active in that subclass. Grants appear in 10 CPC subclasses total.

USPTO PatentsView assignee record - 6 granted patents across 10 technology areas, recorded in grant years 2021–2024. 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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The verdict

According to USPTO PatentsView, Japan ranks #41,080 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 10 technology areas.

#41,080
of 49,997 US assignees by volume: Top 29%
by Innovation Score (43.2/100): 8.8
avg claims per patent

USPTO PatentsView assignee plate

Corpus R41080 · Foreign Corporation #41,080 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 6 grants
LOWER-Q #41,080/49,997
PHOTO-FINISH James and Carol May…
CPC-FOCUS Y02E · 10 areas
INNOV-PAR 43.2/100
CLAIMS-PAR 8.8 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2021–2024 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: James and Carol May Family, Lllp (±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 Japan’s 43.2 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 6.7 pts (16%) Velocity 20.0 pts (46%) Breadth 11.2 pts (26%) Claim depth 5.3 pts (12%)

Qualcomm Incorporated · highest

85
Japan Steel Works M&E · this assignee

43
3D Lighting… · lowest

7

What this shows Japan's Innovation Score is 43.2/100 (top 29% 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 Japan?

Each dot is one of Japan’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). Japan’s own 8.8 claims/patent is ABOVE the 5.3 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Japan's grants concentrate

Japan Steel Works M&E, Inc. is a focused PatentsView assignee: 10 CPC subclasses with 50% of grants classified under Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution). Peak complete grant year is 2023 (2 grants) versus a trough of 1 in 2021. By volume, Japan sits between James Joseph Sanctified Spirits, LLC and Jelmar, LLC.

Japan's three-year grant acceleration

Japan Steel Works M&E, Inc. shows 5 grants in 2022–2024 against only 1 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

James Joseph Sanc…

6
James Madison Inn…

6
James and Carol M…

6
Japan Health Scie…

6
Japan System Plan…

6
Jarder Outdoor Ni…

6
Jasmin Larian

6
Jelmar

6
Japan Steel Works… ◀

6

What this shows Japan holds 6 patents at rank #41,098, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Japan

By rank, the assignees closest to #41,098 in granted patent volume.

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

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

Japan's Innovation Score vs. every tracked assignee

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

43 Top 29% higher than 71% 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 · 2021–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table

Japan Steel Works M&E, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	1	16.7%
2022	1	16.7%
2023	2	33.3%
2024	2	33.3%

Which technologies does Japan Steel Works M&E, Inc. patent most?

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 3

F17C - Vessels FOR Containing OR Storing Compressed, Liquefied OR Solidified GASES; Fixed-capacity GAS-HOLDERS; Filling Vessels With, OR Discharging From Vessels, Compressed, Liquefied, OR Solidified Gases 3

C30B - Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

C22F - Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys 1

F02C - Gas-turbine PLANTS; AIR Intakes FOR Jet-propulsion PLANTS; Controlling Fuel Supply IN Air-breathing Jet-propulsion Plants 1

F05D - Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants 1

F05C - Indexing Scheme Relating TO Materials, Material Properties OR Material Characteristics FOR Machines, Engines OR Pumps Other Than Non-positive-displacement Machines OR Engines 1

C22C - Alloys 1

F01D - Non-positive Displacement Machines OR Engines, e.g. Steam Turbines 1

Top 10 of 10 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

Japan Steel Works M&E, Inc.'s patent record in context - here's where to go next.

Japan Steel Works M&E, Inc.'s lead technology class is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution), 50% of its portfolio - see every assignee active in that class. Explore Y02E
Ranked #41,080 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Japan Steel Works M&E, Inc. against James Joseph Sanctified Spirits, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 43.2/100 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.