USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Asahi Kasei Kabushiki Kaisha

USPTO PatentsView assignee record - 557 granted patents across 183 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C08L (COMPOSITIONS OF MACROMOLECULAR COMPOUNDS).

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

Explore the portfolio See the ranking

557

Total patents granted

183

CPC technology areas

14.6

Avg claims per patent

+150%

5-year filing velocity

The verdict

Asahi holds 557 US patents across 183 technology areas, rank #825 of 50,000 tracked assignees.

#825
of 50,000 US assignees by volume: Top 3%
by Innovation Score (60.9/100): 14.6
avg claims per patent: +150%
filing velocity, last 5 yrs

Portfolio overview

Asahi Kasei Kabushiki Kaisha has been granted 557 US utility patents between 2015 and 2025, placing Asahi Kasei Kabushiki Kaisha at rank #825 across all assignees tracked by PlainPatent. This portfolio spans 183 distinct Cooperative Patent Classification (CPC) subclasses, averaging 14.6 claims per patent with primary concentration in C08L (COMPOSITIONS OF MACROMOLECULAR COMPOUNDS). As a Foreign Corporation, Asahi Kasei Kabushiki Kaisha is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Asahi sits between Valeo Vision (559 patents, rank #821) and Sumitomo Heavy Industries, Ltd. (555 patents, rank #829) - the closest US assignees by grant volume. The composite Innovation Score of 60.9/100 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 398 grants, compared with 159 in the 2015–2019 window, a +150% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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. Asahi Kasei Kabushiki Kaisha's 14.6 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 Asahi Kasei Kabushiki Kaisha against peers pursuing similar technology classes.

Valeo Vision

559
Dümmen Group B V

558
Minebea Mitsumi

558
Zimmer

558
Asahi Kasei ◀

557
Parsons Xtreme GO…

556
Rolls-royce Deuts…

555
Stmicroelectronic…

555
Sumitomo Heavy In…

555

What this shows Asahi holds 557 patents at rank #825, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Asahi

By rank, the assignees closest to #825 in granted patent volume.

Leaders in C08L (Compositions OF Macromolecular Compounds)

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

Asahi's Innovation Score vs. every tracked assignee

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

61 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

Asahi Kasei Kabushiki Kaisha patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	0.9%
2016	11	2.0%
2017	23	4.1%
2018	40	7.2%
2019	80	14.4%
2020	90	16.2%
2021	71	12.7%
2022	69	12.4%
2023	62	11.1%
2024	60	10.8%
2025	46	8.3%

Which technologies does Asahi Kasei Kabushiki Kaisha patent most?

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 135

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 119

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 103

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 94

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 92

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 79

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 70

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 60

B01D - SEPARATION 47

C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS 42

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 41

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 40

H01G - CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 39

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 39

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 36

Top 15 of 183 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#825

Across all tracked assignees

Innovation Score

60.9 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 Asahi Kasei Kabushiki Kaisha hold?

Asahi Kasei Kabushiki Kaisha holds 557 US granted patents filed between 2015 and 2025, spanning 183 technology areas.

What is Asahi Kasei Kabushiki Kaisha's Innovation Score?

Asahi Kasei Kabushiki Kaisha has an Innovation Score of 60.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Asahi Kasei Kabushiki Kaisha focus on?

Asahi Kasei Kabushiki Kaisha's top technology area is C08L (COMPOSITIONS OF MACROMOLECULAR COMPOUNDS) with 135 patents. The company has filed patents in 183 CPC subclasses total.

Is Asahi Kasei Kabushiki Kaisha's patent filing rate increasing or decreasing?

Asahi Kasei Kabushiki Kaisha's recent filing velocity is +150% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Asahi Kasei Kabushiki Kaisha's patents?

Asahi Kasei Kabushiki Kaisha's patents average 14.6 claims each. This falls within the standard range, providing solid legal coverage.

How is the Asahi Kasei Kabushiki Kaisha 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

Asahi's 557 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 - Asahi ranks #825 of 50,000. Top 50 holders
Most of this portfolio concentrates in C08L - see who else leads that technology area. C08L 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.