Where does Sekisui Kasei Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sekisui Kasei Co., Ltd. ranks #16,341 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 Sekisui Kasei Co., Ltd. hold?

Sekisui Kasei Co., Ltd. holds 18 US utility patents granted between 2020 and 2025, spanning 27 technology areas.

What is Sekisui Kasei Co., Ltd.'s Innovation Score?

Sekisui Kasei Co., Ltd. has an Innovation Score of 49.4 out of 100 (top 15% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Sekisui Kasei Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Sekisui Kasei Co., Ltd..

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

Sekisui Kasei Co., Ltd.'s patents average 9.7 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 Sekisui Kasei 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

Sekisui Kasei Co., Ltd.

Q: What technology areas does Sekisui Kasei Co., Ltd. focus on?

Sekisui Kasei Co., Ltd.'s top technology area is C08J (WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h) with 10 patents, ranking #234 of 1,665 assignees active in that subclass. Grants appear in 27 CPC subclasses total.

USPTO PatentsView assignee record - 18 granted patents across 27 technology areas, recorded in grant years 2020–2025. 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: C08J (WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sekisui ranks #16,341 of 49,997 tracked US assignees by granted-patent volume, with 18 patents across 27 technology areas.

#16,341
of 49,997 US assignees by volume: Top 15%
by Innovation Score (49.4/100): 9.7
avg claims per patent

USPTO PatentsView assignee plate

Corpus R16341 · Foreign Corporation #16,341 · 18 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 18 grants
MID-PACK #16,341/49,997
PHOTO-FINISH Science House
CPC-FOCUS C08J · 27 areas
INNOV-PAR 49.4/100
CLAIMS-PAR 9.7 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2025 · 6y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Science House LLC (±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 Sekisui’s 49.4 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 10.2 pts (21%) Velocity 15.0 pts (30%) Breadth 18.4 pts (37%) Claim depth 5.8 pts (12%)

Qualcomm Incorporated · highest

85
Sekisui Kasei · this assignee

49
3D Lighting… · lowest

7

What this shows Sekisui's Innovation Score is 49.4/100 (top 15% 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 Sekisui?

Each dot is one of Sekisui’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). Sekisui’s own 9.7 claims/patent is at or below the 11.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Sekisui's grants concentrate

Sekisui Kasei Co., Ltd. is a focused PatentsView assignee: 27 CPC subclasses with 55.6% of grants classified under C08J (WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h). Peak complete grant year is 2024 (5 grants) versus a trough of 1 in 2023. By volume, Sekisui sits between Science House LLC and Shenzhen Aukeyhi Technology Co..

Sekisui's three-year grant acceleration

Sekisui Kasei Co., Ltd. shows 9 grants in 2022–2024 against only 4 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Science House

18
SCT Technology

18
Seegrid

18
Seiko Watch

18
Shanghai Techwell…

18
Shanghai Zhangmen…

18
Shanutec (Shangha…

18
Shenzhen Aukeyhi…

18
Sekisui Kasei ◀

18

What this shows Sekisui holds 18 patents at rank #16,332, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sekisui

By rank, the assignees closest to #16,332 in granted patent volume.

Leaders in C08J (Working-up)

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

Sekisui's Innovation Score vs. every tracked assignee

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

49 Top 15% higher than 85% 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 · 2020–2025

Grants by year

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

View data table

Sekisui Kasei Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	2	11.1%
2021	2	11.1%
2022	3	16.7%
2023	1	5.6%
2024	5	27.8%
2025partial year	5	27.8%

Which technologies does Sekisui Kasei Co., Ltd. patent most?

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 10

C08L - Compositions OF Macromolecular Compounds 8

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 8

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 6

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 6

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 5

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 2

A43B - Characteristic Features OF FOOTWEAR; Parts OF Footwear 2

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 2

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 2

A61Q - Specific USE OF Cosmetics OR Similar Toiletry Preparations 2

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 2

G02B - Optical Elements, Systems OR Apparatus 2

C09B - Organic Dyes OR Closely-related Compounds FOR Producing Dyes ; , e.g. PIGMENTS; MORDANTS; Lakes 1

G01F - Measuring Volume, Volume Flow, Mass Flow OR Liquid LEVEL; Metering BY Volume 1

Top 15 of 27 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

Sekisui Kasei Co., Ltd.'s patent record in context - here's where to go next.

Sekisui Kasei Co., Ltd.'s lead technology class is C08J (WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h), 55.6% of its portfolio - see every assignee active in that class. Explore C08J
Ranked #16,341 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sekisui Kasei Co., Ltd. against Science House LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 49.4/100 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.