Where does Kureha Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Kureha Corporation ranks #2,200 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 Kureha Corporation hold?

Kureha Corporation holds 179 US utility patents granted between 2015 and 2025, spanning 70 technology areas.

What is Kureha Corporation's Innovation Score?

Kureha Corporation has an Innovation Score of 52.3 out of 100 (top 10% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Kureha Corporation's patent grant rate increasing or decreasing?

Kureha Corporation's recent grant velocity is -13% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Kureha Corporation's patents?

Kureha Corporation's patents average 9.6 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 Kureha Corporation 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

Kureha Corporation

Q: What technology areas does Kureha Corporation focus on?

Kureha Corporation's top technology area is C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds) with 57 patents, ranking #68 of 1,741 assignees active in that subclass. Grants appear in 70 CPC subclasses total.

USPTO PatentsView assignee record - 179 granted patents across 70 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: C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Kureha ranks #2,200 of 49,997 tracked US assignees by granted-patent volume, with 179 patents across 70 technology areas.

#2,200
of 49,997 US assignees by volume: Top 10%
by Innovation Score (52.3/100): 9.6
avg claims per patent: -13%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R2200 · Foreign Corporation #2,200 · 179 grants

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

GRANTS-MID 179 grants
TOP-DECILE #2,200/49,997
PHOTO-FINISH Global Unichip
CPC-WIDE C08G · 70 areas
INNOV-PAR 52.3/100
CLAIMS-PAR 9.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -13% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Global Unichip 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 Kureha’s 52.3 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 17.9 pts (34%) Velocity 3.6 pts (7%) Breadth 25.0 pts (48%) Claim depth 5.8 pts (11%)

Qualcomm Incorporated · highest

85
Dayco IP Holdings · near

52
Nifco Korea · near

52
Boa Technology · near

52
Crompton Technology… · near

52
Kureha · this assignee

52
3D Lighting… · lowest

7

What this shows Kureha's Innovation Score is 52.3/100 (top 10% 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 Kureha?

Each dot is one of Kureha’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). Kureha’s own 9.6 claims/patent is at or below the 14.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Kureha's grant cadence moved

Between 2020–2024, Kureha Corporation received 82 grants versus 94 in 2015–2019 (-13% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2016 at 24 grants and bottomed in 2022 at 11. Lead class C08G accounts for 31.8% of the portfolio across 70 subclasses. Volume neighbours: Global Unichip Corporation (#2,196) and ZF CV Systems Europe BV (#2,204).

Kureha's three-year grant acceleration

From 2019–2021 to 2022–2024, Kureha Corporation moved from 63 to 34 grants (0.54x 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 #2,597. See the growth leaderboard.

Global Unichip

179
Hitachi Energy Sw…

179
Inteva Products

179
Katholieke Univer…

179
Synaptive Medical…

179
Stanley Black & D…

179
The University of…

179
ZF CV Systems Eur…

179
Kureha ◀

179

What this shows Kureha holds 179 patents at rank #2,200, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kureha

By rank, the assignees closest to #2,200 in granted patent volume.

Leaders in C08G (Macromolecular Compounds Obtained Otherwise Than BY React…)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Kureha, neither rank-band nor same-CPC leaders (those blocks stay above). In C08G (Macromolecular Compounds Obtained Otherwise Than BY React…), Kureha ranks #68 of 1,741 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (52 here).

Boa Technology Inc. 52 Crompton Technology Group, Ltd. 52 Dayco IP Holdings, LLC 52 Nifco Korea Inc. 52

Similar claim depth

Nearest assignees by average claims per patent (9.6 here).

Jilin University 9.6 avg Rohm and Haas Company 9.6 avg Edan Instruments, Inc. 9.6 avg JGC Corporation 9.6 avg

Kureha's Innovation Score vs. every tracked assignee

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

52 Top 10% higher than 90% 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

Kureha Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	20	11.2%
2016	24	13.4%
2017	15	8.4%
2018	20	11.2%
2019	15	8.4%
2020	24	13.4%
2021	24	13.4%
2022	11	6.1%
2023	11	6.1%
2024	12	6.7%
2025partial year	3	1.7%

Which technologies does Kureha Corporation patent most?

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 57

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 35

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 32

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 31

C08L - Compositions OF Macromolecular Compounds 26

C07D - Heterocyclic Compounds 24

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 21

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 20

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 20

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 16

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 14

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 14

Y10T - Technical Subjects Covered BY Former US Classification 14

A01N - Preservation OF Bodies OF Humans OR Animals OR Plants OR Parts Thereof ; Biocides, e.g. AS Disinfectants, AS Pesticides OR AS Herbicides ; Pest Repellants OR ATTRACTANTS; Plant Growth Regulators 12

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 10

Top 15 of 70 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

Kureha Corporation's patent record in context - here's where to go next.

Kureha Corporation's lead technology class is C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds), 31.8% of its portfolio - see every assignee active in that class. Explore C08G
Ranked #2,200 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Kureha Corporation against Global Unichip Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 52.3/100 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.