Where does Tosoh Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Tosoh Corporation ranks #1,883 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 Tosoh Corporation hold?

Tosoh Corporation holds 214 US utility patents granted between 2015 and 2025, spanning 88 technology areas.

What is Tosoh Corporation's Innovation Score?

Tosoh Corporation has an Innovation Score of 59.0 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 Tosoh Corporation's patent grant rate increasing or decreasing?

Tosoh Corporation's recent grant velocity is +2% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Tosoh Corporation's patents?

Tosoh Corporation's patents average 11.4 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 Tosoh Corporation 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

Tosoh Corporation

Q: What technology areas does Tosoh Corporation focus on?

Tosoh Corporation's top technology area is C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone) with 47 patents. Grants appear in 88 CPC subclasses total.

USPTO PatentsView assignee record - 214 granted patents across 88 technology areas, recorded in grant years 2015–2025. 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: C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Tosoh ranks #1,883 of 49,997 tracked US assignees by granted-patent volume, with 214 patents across 88 technology areas.

#1,883
of 49,997 US assignees by volume: Top 4%
by Innovation Score (59.0/100): 11.4
avg claims per patent: +2%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1883 · Foreign Corporation #1,883 · 214 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MID 214 grants
TOP-DECILE #1,883/49,997
PHOTO-FINISH NEC Display Solutions
CPC-WIDE C04B · 88 areas
INNOV-PAR 59.0/100
CLAIMS-PAR 11.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +2% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: NEC Display Solutions, Ltd. (±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.

Qualcomm Incorporated · highest

85
Biomet Manufacturing · near

59
Element Six (UK) · near

59
NCH · near

59
Safran Ceramics · near

59
Tosoh · this assignee

59
3D Lighting… · lowest

7

What this shows Tosoh's Innovation Score is 59.0/100 (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.

How Tosoh's grant cadence moved

Between 2020–2024, Tosoh Corporation received 95 grants versus 93 in 2015–2019 (+2% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2016 at 23 grants and bottomed in 2019 at 13. Lead class C04B accounts for 22% of the portfolio across 88 subclasses. Volume neighbours: NEC Display Solutions, Ltd. (#1,879) and Intelligrated Headquarters, LLC (#1,887).

Tosoh's three-year grant acceleration

From 2019–2021 to 2022–2024, Tosoh Corporation moved from 47 to 61 grants (1.30x 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 #641. See the growth leaderboard.

NEC Display Solut…

214
Nunhems B V

214
Senju Metal Indus…

214
St-ericsson

214
Tosoh ◀

214
Brown University

213
Clariant Internat…

213
Danisco US

213
Intelligrated Hea…

213

What this shows Tosoh holds 214 patents at rank #1,883, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tosoh

By rank, the assignees closest to #1,883 in granted patent volume.

Leaders in C04B (Lime)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Tosoh, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (59 here).

Biomet Manufacturing, LLC 59 Safran Ceramics 59 NCH Corporation 59 Element Six (UK) Limited 59

Similar claim depth

Nearest assignees by average claims per patent (11.4 here).

Goertek Inc. 11.4 avg Institute of Automation, Chinese Academy of Sciences 11.4 avg Furukawa Electric Co., Ltd. 11.4 avg ViaCyte, Inc. 11.4 avg

Tosoh'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 · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Tosoh Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	20	9.3%
2016	23	10.7%
2017	18	8.4%
2018	19	8.9%
2019	13	6.1%
2020	17	7.9%
2021	17	7.9%
2022	17	7.9%
2023	23	10.7%
2024	21	9.8%
2025partial year	26	12.1%

Which technologies does Tosoh Corporation patent most?

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 47

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 44

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 43

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 40

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 30

B01D - Separation 30

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 22

C01G - Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f 21

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 20

C07C - Acyclic OR Carbocyclic Compounds 19

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 19

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 17

C07D - Heterocyclic Compounds 16

H01J - Electric Discharge Tubes OR Discharge Lamps 16

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 16

Top 15 of 88 technology areas

Where it ranks

Overall rank by patents

#1,883

of 49,997 tracked assignees

Innovation Score

59.0 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Tosoh Corporation's patent record in context - here's where to go next.

Tosoh Corporation's lead technology class is C04B (Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone), 22% of its portfolio - see every assignee active in that class. Explore C04B
Ranked #1,883 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tosoh Corporation against NEC Display Solutions, Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 59.0/100 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.