Where does Primetals Technologies Japan, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Primetals Technologies Japan, Ltd. ranks #6,942 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 Primetals Technologies Japan, Ltd. hold?

Primetals Technologies Japan, Ltd. holds 48 US utility patents granted between 2015 and 2025, spanning 30 technology areas.

What is Primetals Technologies Japan, Ltd.'s Innovation Score?

Primetals Technologies Japan, Ltd. has an Innovation Score of 44.7 out of 100 (top 25% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Primetals Technologies Japan, Ltd. focus on?

Primetals Technologies Japan, Ltd.'s top technology area is B21B (Rolling OF Metal) with 21 patents, ranking #13 of 171 assignees active in that subclass. Grants appear in 30 CPC subclasses total.

Is Primetals Technologies Japan, Ltd.'s patent grant rate increasing or decreasing?

Primetals Technologies Japan, Ltd.'s recent grant velocity is +5% 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 Primetals Technologies Japan, Ltd.'s patents?

Primetals Technologies Japan, Ltd.'s patents average 10.0 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 Primetals Technologies Japan, 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

Primetals Technologies Japan, Ltd.

USPTO PatentsView assignee record - 48 granted patents across 30 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: B21B (Rolling OF Metal).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Primetals ranks #6,942 of 49,997 tracked US assignees by granted-patent volume, with 48 patents across 30 technology areas.

#6,942
of 49,997 US assignees by volume: Top 25%
by Innovation Score (44.7/100): 10.0
avg claims per patent: +5%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R6942 · Foreign Corporation #6,942 · 48 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-SMALL 48 grants
UPPER-Q #6,942/49,997
PHOTO-FINISH Okinawa Institute…
CPC-FOCUS B21B · 30 areas
INNOV-PAR 44.7/100
CLAIMS-PAR 10.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +5% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Okinawa Institute OF Science AND Technology School Corporation (±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 Primetals’s 44.7 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 13.4 pts (30%) Velocity 5.8 pts (13%) Breadth 19.4 pts (43%) Claim depth 6.0 pts (13%)

Qualcomm Incorporated · highest

85
Humanetics · near

45
Primetals Japan · this assignee

45
SKYPE · near

45
Spire Global… · near

45
Tokyo Seimitsu · near

45
3D Lighting… · lowest

7

What this shows Primetals's Innovation Score is 44.7/100 (top 25% 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 Primetals?

Each dot is one of Primetals’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). Primetals’s own 10.0 claims/patent is at or below the 12.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Primetals's grants concentrate

Primetals Technologies Japan, Ltd. is a focused PatentsView assignee: 30 CPC subclasses with 43.8% of grants classified under B21B (Rolling OF Metal). Peak complete grant year is 2019 (7 grants) versus a trough of 3 in 2015. By volume, Primetals sits between Okinawa Institute OF Science AND Technology School Corporation and Qiagen Sciences, LLC.

Primetals's three-year grant acceleration

Primetals Technologies Japan, Ltd. shows 14 grants in 2022–2024 against only 16 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.

Okinawa Institute…

48
Openet Telecom

48
Perftech

48
Phoenix Contact E…

48
Panasonic Ecology…

48
Picosun Oy

48
Premium Aerotec

48
Qiagen Sciences

48
Primetals Japan ◀

48

What this shows Primetals holds 48 patents at rank #6,938, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Primetals

By rank, the assignees closest to #6,938 in granted patent volume.

Leaders in B21B (Rolling OF Metal)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Primetals, neither rank-band nor same-CPC leaders (those blocks stay above). In B21B (Rolling OF Metal), Primetals ranks #13 of 171 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (45 here).

Tokyo Seimitsu Co., Ltd. 45 SKYPE 45 Spire Global Subsidiary, Inc. 45 Humanetics Corporation 45

Primetals's Innovation Score vs. every tracked assignee

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

45 Top 25% higher than 75% 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

Primetals Technologies Japan, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	6.3%
2016	6	12.5%
2018	6	12.5%
2019	7	14.6%
2020	6	12.5%
2021	3	6.3%
2022	5	10.4%
2023	3	6.3%
2024	6	12.5%
2025partial year	3	6.3%

Which technologies does Primetals Technologies Japan, Ltd. patent most?

B21B - Rolling OF Metal 21

C21D - Modifying THE Physical Structure OF Ferrous METALS; General Devices FOR Heat Treatment OF Ferrous OR Non-ferrous Metals OR ALLOYS; Making Metal Malleable, e.g. BY Decarburisation OR Tempering 7

C23G - Cleaning OR De-greasing OF Metallic Material BY Chemical Methods Other Than Electrolysis 7

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 6

B21C - Manufacture OF Metal Sheets, Wire, Rods, Tubes, Profiles OR Like Semi-manufactured Products Otherwise Than BY ROLLING; Auxiliary Operations Used IN Connection With Metal-working Without Essentially Removing Material 6

F27D - Details OR Accessories OF Furnaces, Kilns, Ovens OR Retorts, IN SO FAR AS They ARE OF Kinds Occurring IN More Than ONE Kind OF Furnace 6

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 5

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 4

C22B - Production AND Refining OF Metals ; Pretreatment OF RAW Materials 3

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 3

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 3

F16D - Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes 3

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 2

C21B - Manufacture OF Iron OR Steel 2

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 2

Top 15 of 30 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

Primetals Technologies Japan, Ltd.'s patent record in context - here's where to go next.

Primetals Technologies Japan, Ltd.'s lead technology class is B21B (Rolling OF Metal), 43.8% of its portfolio - see every assignee active in that class. Explore B21B
Ranked #6,942 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Primetals Technologies Japan, Ltd. against Okinawa Institute OF Science AND Technology School Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.7/100 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.