Where does Proterial, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Proterial, Ltd. ranks #2,134 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 Proterial, Ltd. hold?

Proterial, Ltd. holds 185 US utility patents granted between 2023 and 2025, spanning 94 technology areas.

What is Proterial, Ltd.'s Innovation Score?

Proterial, Ltd. has an Innovation Score of 68.9 out of 100 (top 1% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Proterial, Ltd. focus on?

Proterial, Ltd.'s top technology area is C22C (Alloys) with 52 patents, ranking #27 of 948 assignees active in that subclass. Grants appear in 94 CPC subclasses total.

Is Proterial, Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Proterial, Ltd..

What does claim depth mean for Proterial, Ltd.'s patents?

Proterial, Ltd.'s patents average 9.7 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 Proterial, 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

Proterial, Ltd.

USPTO PatentsView assignee record - 185 granted patents across 94 technology areas, recorded in grant years 2023–2025. 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: C22C (Alloys).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Proterial ranks #2,134 of 49,997 tracked US assignees by granted-patent volume, with 185 patents across 94 technology areas.

#2,134
of 49,997 US assignees by volume: Top 1%
by Innovation Score (68.9/100): 9.7
avg claims per patent

USPTO PatentsView assignee plate

Corpus R2134 · Foreign Corporation #2,134 · 185 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-STRONG · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MID 185 grants
TOP-DECILE #2,134/49,997
PHOTO-FINISH Fujitsu Semiconductor
CPC-WIDE C22C · 94 areas
INNOV-STRONG 68.9/100
CLAIMS-PAR 9.7 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2023–2025 · 3y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Fujitsu Semiconductor Limited (±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 Proterial’s 68.9 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 18.1 pts (26%) Velocity 20.0 pts (29%) Breadth 25.0 pts (36%) Claim depth 5.8 pts (8%)

Qualcomm Incorporated · highest

85
Festool · near

69
Angel · near

69
Vestas Wind Systems… · near

69
Zhejiang Geely… · near

69
Proterial · this assignee

69
3D Lighting… · lowest

7

What this shows Proterial's Innovation Score is 68.9/100 (top 1% 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 Proterial?

Each dot is one of Proterial’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). Proterial’s own 9.7 claims/patent is at or below the 11.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Proterial's grant cadence moved

Grant history spans 2023–2025. Across complete PatentsView years, output peaked in 2024 at 74 grants and bottomed in 2023 at 65. Lead class C22C accounts for 28.1% of the portfolio across 94 subclasses. Volume neighbours: Fujitsu Semiconductor Limited (#2,129) and Asics Corporation (#2,137).

Proterial's three-year grant acceleration

Proterial, Ltd. shows 139 grants in 2022–2024 against only 0 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.

Fujitsu Semicondu…

185
National Taiwan U…

185
Ossur Iceland EHF

185
PETRÓLEO Brasilei…

185
Perkinelmer Healt…

185
Raytheon BBN

185
Zedel

185
Proterial ◀

185
Asics

184

What this shows Proterial holds 185 patents at rank #2,133, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Proterial

By rank, the assignees closest to #2,133 in granted patent volume.

Leaders in C22C (Alloys)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Proterial, neither rank-band nor same-CPC leaders (those blocks stay above). In C22C (Alloys), Proterial ranks #27 of 948 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (69 here).

Zhejiang Geely Holding Group Co., Ltd. 69 Angel Co., Ltd. 69 Vestas Wind Systems A/S 69 Festool GMBH 69

Similar claim depth

Nearest assignees by average claims per patent (9.7 here).

Fujitsu Optical Components Limited 9.7 avg Kabushiki Kaisha Toyota Chuo Kenkyusho 9.7 avg Parsons Xtreme Golf, LLC 9.7 avg Tokyo University of Science Foundation 9.8 avg

Proterial's Innovation Score vs. every tracked assignee

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

69 Top 1% higher than 99% 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 · 2023–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2023–2019 baseline. Full figures in the table below.

View data table

Proterial, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2023	65	35.1%
2024	74	40.0%
2025partial year	46	24.9%

Which technologies does Proterial, Ltd. patent most?

C22C - Alloys 52

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 49

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 27

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 25

B22F - Working Metallic POWDER; Manufacture OF Articles From Metallic POWDER; Making Metallic Powder ; Apparatus OR Devices Specially Adapted FOR Metallic Powder 22

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 17

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 17

G01L - Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, OR Fluid Pressure 14

H02K - Dynamo-electric Machines 13

B33Y - Additive Manufacturing, i.e. Manufacturing OF Three-dimensional [3-D] Objects BY Additive Deposition, Additive Agglomeration OR Additive Layering, e.g. BY 3-D Printing, Stereolithography OR Selective Laser Sintering 13

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 13

C22F - Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys 12

B22D - Casting OF METALS; Casting OF Other Substances BY THE Same Processes OR Devices 11

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 10

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 10

Top 15 of 94 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

Proterial, Ltd.'s patent record in context - here's where to go next.

Proterial, Ltd.'s lead technology class is C22C (Alloys), 28.1% of its portfolio - see every assignee active in that class. Explore C22C
Ranked #2,134 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Proterial, Ltd. against Fujitsu Semiconductor Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 68.9/100 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.