Where does Showa Denko Materials Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Showa Denko Materials Co., Ltd. ranks #2,699 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 Showa Denko Materials Co., Ltd. hold?

Showa Denko Materials Co., Ltd. holds 144 US utility patents granted 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 (top 4% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Showa Denko Materials Co., Ltd.'s patent grant 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 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Showa Denko Materials Co., Ltd.

Q: 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, ranking #93 of 1,741 assignees active in that subclass. Grants appear in 74 CPC subclasses total.

USPTO PatentsView assignee record - 144 granted patents across 74 technology areas, recorded in grant years 2020–2024. 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: C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Showa ranks #2,699 of 49,997 tracked US assignees by granted-patent volume, with 144 patents across 74 technology areas.

#2,699
of 49,997 US assignees by volume: Top 4%
by Innovation Score (59.4/100): 13.9
avg claims per patent

USPTO PatentsView assignee plate

Corpus R2699 · Foreign Corporation #2,699 · 144 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MID 144 grants
TOP-DECILE #2,699/49,997
PHOTO-FINISH Nidec Tosok
CPC-WIDE C08G · 74 areas
INNOV-PAR 59.4/100
CLAIMS-RICH 13.9 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2024 · 5y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Nidec Tosok Corporation (±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 Showa’s 59.4 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 17.2 pts (29%) Velocity 8.8 pts (15%) Breadth 25.0 pts (42%) Claim depth 8.3 pts (14%)

Qualcomm Incorporated · highest

85
NSK · near

59
Cox Communications · near

59
Showa Denko Materials · this assignee

59
MANN+HUMMEL · near

59
Toyoda Gosei · near

59
3D Lighting… · lowest

7

What this shows Showa's Innovation Score is 59.4/100 (top 4% 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 Showa?

Each dot is one of Showa’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). Showa’s own 13.9 claims/patent is at or below the 16.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Showa's grant cadence moved

Grant history spans 2020–2024. Across complete PatentsView years, output peaked in 2022 at 66 grants and bottomed in 2024 at 1. Lead class C08G accounts for 31.9% of the portfolio across 74 subclasses. Volume neighbours: Nidec Tosok Corporation (#2,695) and Atotech Deutschland GmbH & Co. KG (#2,703).

Showa's three-year grant acceleration

From 2019–2021 to 2022–2024, Showa Denko Materials Co., Ltd. moved from 62 to 82 grants (1.32x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #616. See the growth leaderboard.

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.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Showa, neither rank-band nor same-CPC leaders (those blocks stay above). In C08G (Macromolecular Compounds Obtained Otherwise Than BY React…), Showa ranks #93 of 1,741 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (59 here).

Cox Communications, Inc. 59 MANN+HUMMEL GmbH 59 Toyoda Gosei Co., Ltd. 59 NSK Ltd. 59

Similar claim depth

Nearest assignees by average claims per patent (13.9 here).

GKN Automotive Limited 13.9 avg DOW Tray Co., Ltd. 13.9 avg Aspect Imaging Ltd. 13.9 avg Gree Electric Appliances (WUHAN) Co., Ltd 13.9 avg

Showa's Innovation Score vs. every tracked assignee

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

59 Top 4% higher than 96% 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 · 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

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

Showa Denko Materials Co., Ltd.'s patent record in context - here's where to go next.

Showa Denko Materials Co., Ltd.'s lead technology class is C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds), 31.9% of its portfolio - see every assignee active in that class. Explore C08G
Ranked #2,699 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Showa Denko Materials Co., Ltd. against Nidec Tosok Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 59.4/100 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.