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

According to USPTO PatentsView (2015–2025 granted utility patents), Tokuden Co., Ltd. ranks #11,840 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 Tokuden Co., Ltd. hold?

Tokuden Co., Ltd. holds 26 US utility patents granted between 2016 and 2025, spanning 21 technology areas.

What is Tokuden Co., Ltd.'s Innovation Score?

Tokuden Co., Ltd. has an Innovation Score of 33.4 out of 100 (44th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Tokuden Co., Ltd.'s recent grant velocity is -53% 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 Tokuden Co., Ltd.'s patents?

Tokuden Co., Ltd.'s patents average 7.0 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 Tokuden 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

Tokuden Co., Ltd.

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

Tokuden Co., Ltd.'s top technology area is H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General) with 17 patents, ranking #211 of 2,247 assignees active in that subclass. Grants appear in 21 CPC subclasses total.

USPTO PatentsView assignee record - 26 granted patents across 21 technology areas, recorded in grant years 2016–2025. 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: H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Tokuden ranks #11,840 of 49,997 tracked US assignees by granted-patent volume, with 26 patents across 21 technology areas.

#11,840
of 49,997 US assignees by volume: 44th percentile
by Innovation Score (33.4/100): 7.0
avg claims per patent: -53%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R11840 · Foreign Corporation #11,840 · 26 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 26 grants
UPPER-Q #11,840/49,997
PHOTO-FINISH Thermotek
CPC-FOCUS H05B · 21 areas
INNOV-THIN 33.4/100
CLAIMS-SPARSE 7.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -53% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Thermotek, 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 Tokuden’s 33.4 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 11.4 pts (34%) Velocity 1.7 pts (5%) Breadth 16.2 pts (48%) Claim depth 4.2 pts (13%)

Qualcomm Incorporated · highest

85
Ayla Networks · near

33
LSI Medience · near

33
Tokuden · this assignee

33
Uniloc Luxembourg · near

33
Aziende Chimiche… · near

33
3D Lighting… · lowest

7

What this shows Tokuden's Innovation Score is 33.4/100 (44th 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 Tokuden?

Each dot is one of Tokuden’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). Tokuden’s own 7.0 claims/patent is at or below the 13.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Tokuden's grants concentrate

Tokuden Co., Ltd. is a focused PatentsView assignee: 21 CPC subclasses with 65.4% of grants classified under H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General). Peak complete grant year is 2019 (7 grants) versus a trough of 1 in 2022. By volume, Tokuden sits between Thermotek, Inc. and Tubitak.

Tokuden's three-year grant acceleration

Tokuden Co., Ltd. shows 3 grants in 2022–2024 against only 12 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.

Thermotek

26
TI Automotive (Fu…

26
Tietex Internatio…

26
Tod's S P A

26
Topivert Pharma

26
Toptica Photonics

26
Trinity North Ame…

26
Tubitak

26
Tokuden ◀

26

What this shows Tokuden holds 26 patents at rank #11,834, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tokuden

By rank, the assignees closest to #11,834 in granted patent volume.

Leaders in H05B (Electric Heating)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Tokuden, neither rank-band nor same-CPC leaders (those blocks stay above). In H05B (Electric Heating), Tokuden ranks #211 of 2,247 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (33 here).

LSI Medience Corporation 33 Uniloc Luxembourg S.A. 33 Aziende Chimiche Riunite Angelini FRANCESCO—A.C.R.A.F. S.p.A. 33 Ayla Networks, Inc. 33

Tokuden's Innovation Score vs. every tracked assignee

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

33 44th percentile higher than 44% 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 · 2016–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Tokuden Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	3	11.5%
2017	5	19.2%
2018	2	7.7%
2019	7	26.9%
2020	3	11.5%
2021	2	7.7%
2022	1	3.8%
2023	2	7.7%
2025partial year	1	3.8%

Which technologies does Tokuden Co., Ltd. patent most?

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 17

F22G - Superheating OF Steam 8

F22B - Methods OF Steam GENERATION; Steam Boilers 8

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 4

H02M - Apparatus FOR Conversion Between AC AND AC, Between AC AND DC, OR Between DC AND DC, AND FOR USE With Mains OR Similar Power Supply SYSTEMS; Conversion OF DC OR AC Input Power Into Surge Output POWER; Control OR Regulation Thereof 4

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 3

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 2

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

C10G - Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GASES; Refining Mixtures Mainly Consisting OF HYDROCARBONS; Reforming OF NAPHTHA; Mineral Waxes 1

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 1

F24H - Fluid Heaters, e.g. Water OR AIR Heaters, Having Heat-generating Means, e.g. Heat Pumps, IN General 1

D21G - CALENDERS; Accessories FOR Paper-making Machines 1

B21B - Rolling OF Metal 1

F16C - SHAFTS; Flexible SHAFTS; Elements OR Crankshaft MECHANISMS; Rotary Bodies Other Than Gearing ELEMENTS; Bearings 1

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 1

Top 15 of 21 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

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

Tokuden Co., Ltd.'s lead technology class is H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General), 65.4% of its portfolio - see every assignee active in that class. Explore H05B
Ranked #11,840 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tokuden Co., Ltd. against Thermotek, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 33.4/100 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.