USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Denka Company Limited

USPTO PatentsView assignee record - 359 granted patents across 118 technology areas, active 2016–2025. 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

359

Total patents granted

118

CPC technology areas

9.8

Avg claims per patent

+118%

5-year filing velocity

The verdict

Denka holds 359 US patents across 118 technology areas, rank #1,186 of 50,000 tracked assignees.

#1,186
of 50,000 US assignees by volume: Top 3%
by Innovation Score (61.5/100): 9.8
avg claims per patent: +118%
filing velocity, last 5 yrs

Portfolio overview

Denka Company Limited has been granted 359 US utility patents between 2016 and 2025, placing Denka Company Limited at rank #1,186 across all assignees tracked by PlainPatent. This portfolio spans 118 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.8 claims per patent with primary concentration in C08L (COMPOSITIONS OF MACROMOLECULAR COMPOUNDS). As a Foreign Corporation, Denka Company Limited is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Denka sits between Universiteit GENT (361 patents, rank #1,182) and Valeo Systemes D'essuyage (357 patents, rank #1,190) - 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 246 grants, compared with 113 in the 2015–2019 window, a +118% 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. Denka Company Limited's 9.8 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, 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 Denka Company Limited against peers pursuing similar technology classes.

Universiteit GENT

361
Academia Sinica

360
Institute OF Micr…

360
University of Geo…

360
Institute FOR Inf…

359
South China Unive…

359
Denka ◀

359
Trustees OF Bosto…

358
Valeo Systemes d'…

357

What this shows Denka holds 359 patents at rank #1,186, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Denka

By rank, the assignees closest to #1,186 in granted patent volume.

Leaders in C08L (Compositions OF Macromolecular Compounds)

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

Denka'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 · 2016–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Denka Company Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	46	12.8%
2017	20	5.6%
2018	23	6.4%
2019	24	6.7%
2020	29	8.1%
2021	38	10.6%
2022	46	12.8%
2023	29	8.1%
2024	66	18.4%
2025	38	10.6%

Which technologies does Denka Company Limited patent most?

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 92

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 77

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 76

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 72

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 70

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 61

H10H - INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS 59

H05K - PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 48

C09J - ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES 40

C04B - LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE 40

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 34

C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS 29

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 28

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 27

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 24

Top 15 of 118 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#1,186

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 Denka Company Limited hold?

Denka Company Limited holds 359 US granted patents filed between 2016 and 2025, spanning 118 technology areas.

What is Denka Company Limited's Innovation Score?

Denka Company Limited 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 Denka Company Limited focus on?

Denka Company Limited's top technology area is C08L (COMPOSITIONS OF MACROMOLECULAR COMPOUNDS) with 92 patents. The company has filed patents in 118 CPC subclasses total.

Is Denka Company Limited's patent filing rate increasing or decreasing?

Denka Company Limited's recent filing velocity is +118% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Denka Company Limited's patents?

Denka Company Limited's patents average 9.8 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Denka Company Limited 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

Denka's 359 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 - Denka ranks #1,186 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.