Where does TOA Eiyo Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), TOA Eiyo Ltd ranks #37,971 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 TOA Eiyo Ltd hold?

TOA Eiyo Ltd holds 7 US utility patents granted between 2015 and 2020, spanning 6 technology areas.

What is TOA Eiyo Ltd's Innovation Score?

TOA Eiyo Ltd has an Innovation Score of 21.1 out of 100 (8th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does TOA Eiyo Ltd focus on?

TOA Eiyo Ltd's top technology area is A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations) with 7 patents, ranking #2,588 of 6,058 assignees active in that subclass. Grants appear in 6 CPC subclasses total.

Is TOA Eiyo Ltd's patent grant rate increasing or decreasing?

TOA Eiyo Ltd's recent grant velocity is -60% 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 TOA Eiyo Ltd's patents?

TOA Eiyo Ltd's patents average 8.7 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 TOA Eiyo 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

TOA Eiyo Ltd

USPTO PatentsView assignee record - 7 granted patents across 6 technology areas, recorded in grant years 2015–2020. 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: A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, TOA ranks #37,971 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 6 technology areas.

#37,971
of 49,997 US assignees by volume: 8th percentile
by Innovation Score (21.1/100): 8.7
avg claims per patent: -60%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R37971 · Foreign Corporation #37,971 · 7 grants

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

GRANTS-MICRO 7 grants
LOWER-Q #37,971/49,997
PHOTO-FINISH TIW
CPC-NARROW A61P · 6 areas
INNOV-THIN 21.1/100
CLAIMS-PAR 8.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -60% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: TIW 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 TOA’s 21.1 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 (34%) Velocity 0.0 pts (0%) Breadth 8.7 pts (41%) Claim depth 5.2 pts (25%)

Qualcomm Incorporated · highest

85
TOA Eiyo · this assignee

21
3D Lighting… · lowest

7

What this shows TOA's Innovation Score is 21.1/100 (8th 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 TOA?

Each dot is one of TOA’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). TOA’s own 8.7 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.

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

Where TOA's grants concentrate

TOA Eiyo Ltd is a focused PatentsView assignee: 6 CPC subclasses with 100% of grants classified under A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations). Peak complete grant year is 2018 (2 grants) versus a trough of 1 in 2015. By volume, TOA sits between TIW Corporation and Tokyo GAS Living Engineering Co., Ltd..

TIW

7
TLA Targeted Immu…

7
TMP Weapons

7
TMT Tapping Measu…

7
Todos Medical

7
Tog-ip

7
Toho Kasei

7
Tokyo GAS Living…

7
TOA Eiyo ◀

7

What this shows TOA holds 7 patents at rank #37,861, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near TOA

By rank, the assignees closest to #37,861 in granted patent volume.

Leaders in A61P (Specific Therapeutic Activity OF Chemical Compounds OR Me…)

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

TOA's Innovation Score vs. every tracked assignee

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

21 8th percentile higher than 8% 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 · 2015–2020

Grants by year

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

View data table

TOA Eiyo Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	14.3%
2016	1	14.3%
2017	1	14.3%
2018	2	28.6%
2020	2	28.6%

Which technologies does TOA Eiyo Ltd patent most?

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 7

C07D - Heterocyclic Compounds 6

C07C - Acyclic OR Carbocyclic Compounds 4

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 4

C07B - General Methods OF Organic CHEMISTRY; Apparatus Therefor 1

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 1

Top 6 of 6 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

TOA Eiyo Ltd's patent record in context - here's where to go next.

TOA Eiyo Ltd's lead technology class is A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations), 100% of its portfolio - see every assignee active in that class. Explore A61P
Ranked #37,971 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare TOA Eiyo Ltd against TIW Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 21.1/100 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.