USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Kuraray Co., Ltd.

USPTO PatentsView assignee record - 669 granted patents across 160 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C08F (MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

669

Total patents granted

160

CPC technology areas

13.2

Avg claims per patent

+29%

5-year filing velocity

The verdict

Kuraray holds 669 US patents across 160 technology areas, rank #672 of 50,000 tracked assignees.

#672
of 50,000 US assignees by volume: Top 3%
by Innovation Score (61.5/100): 13.2
avg claims per patent: +29%
filing velocity, last 5 yrs

Portfolio overview

Kuraray Co., Ltd. has been granted 669 US utility patents between 2015 and 2025, placing Kuraray Co., Ltd. at rank #672 across all assignees tracked by PlainPatent. This portfolio spans 160 distinct Cooperative Patent Classification (CPC) subclasses, averaging 13.2 claims per patent with primary concentration in C08F (MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS). As a Foreign Corporation, Kuraray Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Kuraray sits between General Electric Technology Gmbh (670 patents, rank #668) and Thyssenkrupp Ag (665 patents, rank #676) - the closest US assignees by grant volume. The composite Innovation Score of 61.5/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 377 grants, compared with 292 in the 2015–2019 window, a +29% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Kuraray Co., Ltd.'s 13.2 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Kuraray Co., Ltd. against peers pursuing similar technology classes.

General Electric…

670
TE Connectivity

670
ATI ULC

669
BAE Systems

669
King Abdullah Uni…

669
Kuraray ◀

669
Socionext

668
Takeda Pharmaceut…

668
thyssenkrupp

665

What this shows Kuraray holds 669 patents at rank #672, 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 #672 in granted patent volume.

Leaders in C08F (Macromolecular Compounds Obtained BY Reactions ONLY Invol…)

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, filing velocity, technology breadth, and claim depth (0–100)

62 Top 3% higher than 97% of 50,000 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

Kuraray Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	39	5.8%
2016	51	7.6%
2017	61	9.1%
2018	67	10.0%
2019	74	11.1%
2020	71	10.6%
2021	60	9.0%
2022	56	8.4%
2023	63	9.4%
2024	68	10.2%
2025	59	8.8%

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

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 233

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 218

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 164

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 150

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 134

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 81

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 80

C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 63

B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS 57

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 53

C09J - ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES 53

B65D - CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES 51

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 51

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 50

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 45

Top 15 of 160 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Standard

Velocity Growing

Where it ranks

Overall rank by patents

#672

Across all tracked assignees

Innovation Score

61.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Kuraray Co., Ltd. hold?

Kuraray Co., Ltd. holds 669 US granted patents filed between 2015 and 2025, spanning 160 technology areas.

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

Kuraray Co., Ltd. has an Innovation Score of 61.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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

Kuraray Co., Ltd.'s top technology area is C08F (MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS) with 233 patents. The company has filed patents in 160 CPC subclasses total.

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

Kuraray Co., Ltd.'s recent filing velocity is +29% compared to the prior five-year period. The company is maintaining or growing its patent output.

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

Kuraray Co., Ltd.'s patents average 13.2 claims each. This falls within the standard range, providing solid legal coverage.

How is the Kuraray 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.

How to use this portfolio

Kuraray's 669 grants land it in the top 3% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Kuraray ranks #672 of 50,000. Top 50 holders
Most of this portfolio concentrates in C08F - see who else leads that technology area. C08F leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.