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

According to USPTO PatentsView (2015–2025 granted utility patents), Toho Kasei Co., Ltd. ranks #37,977 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 Toho Kasei Co., Ltd. hold?

Toho Kasei Co., Ltd. holds 7 US utility patents granted between 2018 and 2024, spanning 16 technology areas.

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

Toho Kasei Co., Ltd. has an Innovation Score of 28.7 out of 100 (28th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Toho Kasei Co., Ltd.'s recent grant velocity is -25% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

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

Toho Kasei Co., Ltd.'s patents average 9.6 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 Toho 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

Toho Kasei Co., Ltd.

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

Toho 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 4 patents, ranking #500 of 1,665 assignees active in that subclass. Grants appear in 16 CPC subclasses total.

USPTO PatentsView assignee record - 7 granted patents across 16 technology areas, recorded in grant years 2018–2024. 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: 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, Toho ranks #37,977 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 16 technology areas.

#37,977
of 49,997 US assignees by volume: 28th percentile
by Innovation Score (28.7/100): 9.6
avg claims per patent: -25%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R37977 · Foreign Corporation #37,977 · 7 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-MICRO 7 grants
LOWER-Q #37,977/49,997
PHOTO-FINISH TMT Tapping…
CPC-FOCUS C08J · 16 areas
INNOV-THIN 28.7/100
CLAIMS-PAR 9.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -25% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: TMT Tapping Measuring Technology SÀRL (±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 Toho’s 28.7 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 7.2 pts (25%) Velocity 1.7 pts (6%) Breadth 14.1 pts (49%) Claim depth 5.7 pts (20%)

Qualcomm Incorporated · highest

85
Toho Kasei · this assignee

29
3D Lighting… · lowest

7

What this shows Toho's Innovation Score is 28.7/100 (28th percentile 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 Toho?

Each dot is one of Toho’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). Toho’s own 9.6 claims/patent is at or below the 11.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Toho's grants concentrate

Toho Kasei Co., Ltd. is a focused PatentsView assignee: 16 CPC subclasses with 57.1% 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 2018 (2 grants) versus a trough of 1 in 2024. By volume, Toho sits between TMT Tapping Measuring Technology SÀRL and TORQ/LITE, LLC.

Toho's three-year grant acceleration

Toho Kasei Co., Ltd. shows 1 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.

TMT Tapping Measu…

7
TOA Eiyo

7
Todos Medical

7
Tog-ip

7
Tokyo GAS Living…

7
Toray Films Europe

7
Torex Semiconduct…

7
TORQ/LITE

7
Toho Kasei ◀

7

What this shows Toho holds 7 patents at rank #37,864, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Toho

By rank, the assignees closest to #37,864 in granted patent volume.

Leaders in C08J (Working-up)

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

Toho's Innovation Score vs. every tracked assignee

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

29 28th percentile higher than 28% 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 · 2018–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Toho Kasei Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	2	28.6%
2019	2	28.6%
2021	2	28.6%
2024	1	14.3%

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

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 4

C08L - Compositions OF Macromolecular Compounds 3

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 2

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 2

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

H01T - Spark GAPS; Overvoltage Arresters Using Spark GAPS; Sparking PLUGS; Corona DEVICES; Generating Ions TO BE Introduced Into Non-enclosed Gases 2

H10N - Electric Solid-state Devices NOT Otherwise Provided FOR 1

B09B - Disposal OF Solid Waste NOT Otherwise Provided FOR 1

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 1

H10F - Inorganic Semiconductor Devices Sensitive TO Infrared Radiation, Light, Electromagnetic Radiation OF Shorter Wavelength OR Corpuscular Radiation 1

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

Y10T - Technical Subjects Covered BY Former US Classification 1

B29B - Preparation OR Pretreatment OF THE Material TO BE SHAPED; Making Granules OR PREFORMS; Recovery OF Plastics OR Other Constituents OF Waste Material Containing Plastics 1

Top 15 of 16 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

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

Toho 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), 57.1% of its portfolio - see every assignee active in that class. Explore C08J
Ranked #37,977 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Toho Kasei Co., Ltd. against TMT Tapping Measuring Technology SÀRL, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 28.7/100 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.