USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Showa Denko Materials Co., Ltd.

USPTO PatentsView assignee record - 144 granted patents across 74 technology areas, active 2020–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C08G (MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS).

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

Explore the portfolio See the ranking

144

Total patents granted

CPC technology areas

13.9

Avg claims per patent

5-year filing velocity

The verdict

Showa holds 144 US patents across 74 technology areas, rank #2,699 of 50,000 tracked assignees.

#2,699
of 50,000 US assignees by volume: Top 4%
by Innovation Score (59.4/100): 13.9
avg claims per patent

Portfolio overview

Showa Denko Materials Co., Ltd. has been granted 144 US utility patents between 2020 and 2024, placing Showa Denko Materials Co., Ltd. at rank #2,699 across all assignees tracked by PlainPatent. This portfolio spans 74 distinct Cooperative Patent Classification (CPC) subclasses, averaging 13.9 claims per patent with primary concentration in C08G (MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS). As a Foreign Corporation, Showa Denko Materials Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Showa sits between Nidec Tosok Corporation (144 patents, rank #2,695) and Atotech Deutschland Gmbh & Co. KG (143 patents, rank #2,703) - the closest US assignees by grant volume. The composite Innovation Score of 59.4/100 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. Historical data spans 2020 through 2024, with 144 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. 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. Showa Denko Materials Co., Ltd.'s 13.9 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 74 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Showa Denko Materials Co., Ltd. against peers pursuing similar technology classes.

Nidec Tosok

144
Pilkington Group

144
Qualcomm

144
Quantcast

144
Statoil Petroleum…

144
Terrapower

144
Velos Media

144
Showa Denko Mater… ◀

144
Atotech Deutschla…

143

What this shows Showa holds 144 patents at rank #2,699, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Showa

By rank, the assignees closest to #2,699 in granted patent volume.

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

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

Showa's Innovation Score vs. every tracked assignee

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

59 Top 4% higher than 96% 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 · 2020–2024

Grants by year

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

View data table

Showa Denko Materials Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	7	4.9%
2021	55	38.2%
2022	66	45.8%
2023	15	10.4%
2024	1	0.7%

Which technologies does Showa Denko Materials Co., Ltd. patent most?

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 46

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 45

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 40

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 30

H05K - PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 30

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 30

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 29

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 23

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 19

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 17

C09J - ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES 16

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 15

C09G - POLISHING COMPOSITIONS ; SKI WAXES 14

B24B - MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING ; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS 12

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 10

Top 15 of 74 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Standard

Where it ranks

Overall rank by patents

#2,699

Across all tracked assignees

Innovation Score

59.4 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 Showa Denko Materials Co., Ltd. hold?

Showa Denko Materials Co., Ltd. holds 144 US granted patents filed between 2020 and 2024, spanning 74 technology areas.

What is Showa Denko Materials Co., Ltd.'s Innovation Score?

Showa Denko Materials Co., Ltd. has an Innovation Score of 59.4 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Showa Denko Materials Co., Ltd. focus on?

Showa Denko Materials Co., Ltd.'s top technology area is C08G (MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS) with 46 patents. The company has filed patents in 74 CPC subclasses total.

Is Showa Denko Materials Co., Ltd.'s patent filing rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Showa Denko Materials Co., Ltd..

What does claim depth mean for Showa Denko Materials Co., Ltd.'s patents?

Showa Denko Materials Co., Ltd.'s patents average 13.9 claims each. This falls within the standard range, providing solid legal coverage.

How is the Showa Denko Materials 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

Showa's 144 grants land it in the top 4% 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 - Showa ranks #2,699 of 50,000. Top 50 holders
Most of this portfolio concentrates in C08G - see who else leads that technology area. C08G 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.