Where does Kuraray Chemical Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Kuraray Chemical Co., Ltd. ranks #41,314 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 Kuraray Chemical Co., Ltd. hold?

Kuraray Chemical Co., Ltd. holds 6 US utility patents granted between 2015 and 2016, spanning 12 technology areas.

What is Kuraray Chemical Co., Ltd.'s Innovation Score?

Kuraray Chemical Co., Ltd. has an Innovation Score of 26.5 out of 100 (20th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Kuraray Chemical Co., Ltd.'s patent grant rate increasing or decreasing?

Kuraray Chemical Co., Ltd.'s recent grant velocity is -100% 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 Kuraray Chemical Co., Ltd.'s patents?

Kuraray Chemical Co., Ltd.'s patents average 12.5 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 Kuraray Chemical 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

Kuraray Chemical Co., Ltd.

Q: What technology areas does Kuraray Chemical Co., Ltd. focus on?

Kuraray Chemical Co., Ltd.'s top technology area is C01B (Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c) with 4 patents, ranking #584 of 1,689 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

USPTO PatentsView assignee record - 6 granted patents across 12 technology areas, recorded in grant years 2015–2016. 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: C01B (Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Kuraray ranks #41,314 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 12 technology areas.

#41,314
of 49,997 US assignees by volume: 20th percentile
by Innovation Score (26.5/100): 12.5
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R41314 · Foreign Corporation #41,314 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #41,314/49,997
PHOTO-FINISH Kukdo Chemical
CPC-FOCUS C01B · 12 areas
INNOV-THIN 26.5/100
CLAIMS-RICH 12.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Kukdo Chemical 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 Kuraray’s 26.5 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 6.7 pts (25%) Velocity 0.0 pts (0%) Breadth 12.2 pts (46%) Claim depth 7.5 pts (28%)

Qualcomm Incorporated · highest

85
Kuraray Chemical · this assignee

26
3D Lighting… · lowest

7

What this shows Kuraray's Innovation Score is 26.5/100 (20th percentile 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 Kuraray?

Each dot is one of Kuraray’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). Kuraray’s own 12.5 claims/patent is ABOVE the 9.2 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Kuraray's grants concentrate

Kuraray Chemical Co., Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 66.7% of grants classified under C01B (Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c). Peak complete grant year is 2016 (4 grants) versus a trough of 2 in 2015. By volume, Kuraray sits between Kukdo Chemical Co., Ltd. and Kyowa Chemical Industry Co., Ltd..

Kukdo Chemical

6
Kulcloud

6
Kunshan Tianyang…

6
Kuraray America

6
Kusumoto Chemicals

6
Kwik LOK

6
Kyocera OY

6
Kyowa Chemical In…

6
Kuraray Chemical ◀

6

What this shows Kuraray holds 6 patents at rank #41,217, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kuraray

By rank, the assignees closest to #41,217 in granted patent volume.

Leaders in C01B (Non-metallic Elements)

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

Kuraray's Innovation Score vs. every tracked assignee

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

26 20th percentile higher than 20% 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 · 2015–2016

Grants by year

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

View data table

Kuraray Chemical Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	33.3%
2016	4	66.7%

Which technologies does Kuraray Chemical Co., Ltd. patent most?

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 4

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 3

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

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 2

H01G - CAPACITORS; Capacitors, Rectifiers, Detectors, Switching Devices, Light-sensitive OR Temperature-sensitive Devices OF THE Electrolytic Type 2

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 2

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 1

B01D - Separation 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

Y10T - Technical Subjects Covered BY Former US Classification 1

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 1

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 1

Top 12 of 12 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

Kuraray Chemical Co., Ltd.'s patent record in context - here's where to go next.

Kuraray Chemical Co., Ltd.'s lead technology class is C01B (Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c), 66.7% of its portfolio - see every assignee active in that class. Explore C01B
Ranked #41,314 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Kuraray Chemical Co., Ltd. against Kukdo Chemical Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 26.5/100 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.