Where does Tohoku Electric Power Company, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Tohoku Electric Power Company, Inc. ranks #20,540 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 Tohoku Electric Power Company, Inc. hold?

Tohoku Electric Power Company, Inc. holds 14 US utility patents granted between 2015 and 2019, spanning 22 technology areas.

What is Tohoku Electric Power Company, Inc.'s Innovation Score?

Tohoku Electric Power Company, Inc. has an Innovation Score of 30.2 out of 100 (33rd 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 Tohoku Electric Power Company, Inc. focus on?

Tohoku Electric Power Company, Inc.'s top technology area is F01D (Non-positive Displacement Machines OR Engines, e.g. Steam Turbines) with 5 patents, ranking #133 of 462 assignees active in that subclass. Grants appear in 22 CPC subclasses total.

Is Tohoku Electric Power Company, Inc.'s patent grant rate increasing or decreasing?

Tohoku Electric Power Company, Inc.'s recent grant velocity is -100% 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 Tohoku Electric Power Company, Inc.'s patents?

Tohoku Electric Power Company, Inc.'s patents average 7.1 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 Tohoku Electric Power Company, Inc. 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

Tohoku Electric Power Company, Inc.

USPTO PatentsView assignee record - 14 granted patents across 22 technology areas, recorded in grant years 2015–2019. 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: F01D (Non-positive Displacement Machines OR Engines, e.g. Steam Turbines).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Tohoku ranks #20,540 of 49,997 tracked US assignees by granted-patent volume, with 14 patents across 22 technology areas.

#20,540
of 49,997 US assignees by volume: 33rd percentile
by Innovation Score (30.2/100): 7.1
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R20540 · Foreign Corporation #20,540 · 14 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 14 grants
MID-PACK #20,540/49,997
PHOTO-FINISH Thomson Industries
CPC-FOCUS F01D · 22 areas
INNOV-THIN 30.2/100
CLAIMS-SPARSE 7.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Thomson Industries, Inc. (±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 Tohoku’s 30.2 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 9.4 pts (31%) Velocity 0.0 pts (0%) Breadth 16.6 pts (55%) Claim depth 4.2 pts (14%)

Qualcomm Incorporated · highest

85
Tohoku Electric Power · this assignee

30
3D Lighting… · lowest

7

What this shows Tohoku's Innovation Score is 30.2/100 (33rd 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 Tohoku?

Each dot is one of Tohoku’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). Tohoku’s own 7.1 claims/patent is at or below the 10.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Tohoku's grants concentrate

Tohoku Electric Power Company, Inc. is a focused PatentsView assignee: 22 CPC subclasses with 35.7% of grants classified under F01D (Non-positive Displacement Machines OR Engines, e.g. Steam Turbines). Peak complete grant year is 2016 (7 grants) versus a trough of 1 in 2017. By volume, Tohoku sits between Thomson Industries, Inc. and TON DUC Thang University.

Thomson Industries

14
Thornhill Scienti…

14
THX

14
Tigers Polymer

14
Tokyo Metropolita…

14
Tokyo University…

14
TOM Dixon

14
TON DUC Thang Uni…

14
Tohoku Electric P… ◀

14

What this shows Tohoku holds 14 patents at rank #20,507, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tohoku

By rank, the assignees closest to #20,507 in granted patent volume.

Leaders in F01D (Non-positive Displacement Machines OR Engines)

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

Tohoku's Innovation Score vs. every tracked assignee

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

30 33rd percentile higher than 33% 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 · 2015–2019

Grants by year

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

View data table

Tohoku Electric Power Company, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	14.3%
2016	7	50.0%
2017	1	7.1%
2018	1	7.1%
2019	3	21.4%

Which technologies does Tohoku Electric Power Company, Inc. patent most?

F01D - Non-positive Displacement Machines OR Engines, e.g. Steam Turbines 5

F05D - Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants 5

F02C - Gas-turbine PLANTS; AIR Intakes FOR Jet-propulsion PLANTS; Controlling Fuel Supply IN Air-breathing Jet-propulsion Plants 5

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 4

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 3

F27D - Details OR Accessories OF Furnaces, Kilns, Ovens OR Retorts, IN SO FAR AS They ARE OF Kinds Occurring IN More Than ONE Kind OF Furnace 2

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 2

F23D - Burners 1

F23R - Generating Combustion Products OF High Pressure OR High Velocity, e.g. Gas-turbine Combustion Chambers 1

C10J - Production OF Producer GAS, Water-gas, Synthesis GAS From Solid Carbonaceous Material, OR Mixtures Containing These Gases ; Carburetting AIR OR Other Gases 1

F23N - Regulating OR Controlling Combustion 1

F23J - Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues 1

C08L - Compositions OF Macromolecular Compounds 1

G05F - Systems FOR Regulating Electric OR Magnetic Variables 1

E02B - Hydraulic Engineering 1

Top 15 of 22 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

Tohoku Electric Power Company, Inc.'s patent record in context - here's where to go next.

Tohoku Electric Power Company, Inc.'s lead technology class is F01D (Non-positive Displacement Machines OR Engines, e.g. Steam Turbines), 35.7% of its portfolio - see every assignee active in that class. Explore F01D
Ranked #20,540 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tohoku Electric Power Company, Inc. against Thomson Industries, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.2/100 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.