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

According to USPTO PatentsView (2015–2025 granted utility patents), TBK Co., Ltd. ranks #23,506 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 TBK Co., Ltd. hold?

TBK Co., Ltd. holds 12 US utility patents granted between 2015 and 2025, spanning 14 technology areas.

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

TBK Co., Ltd. has an Innovation Score of 26.9 out of 100 (22nd percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

TBK Co., Ltd.'s recent grant velocity is -62% 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 TBK Co., Ltd.'s patents?

TBK Co., Ltd.'s patents average 4.3 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 TBK 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

TBK Co., Ltd.

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

TBK Co., Ltd.'s top technology area is F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps) with 4 patents, ranking #153 of 587 assignees active in that subclass. Grants appear in 14 CPC subclasses total.

USPTO PatentsView assignee record - 12 granted patents across 14 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: F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, TBK ranks #23,506 of 49,997 tracked US assignees by granted-patent volume, with 12 patents across 14 technology areas.

#23,506
of 49,997 US assignees by volume: 22nd percentile
by Innovation Score (26.9/100): 4.3
avg claims per patent: -62%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R23506 · Foreign Corporation #23,506 · 12 grants

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

GRANTS-MICRO 12 grants
MID-PACK #23,506/49,997
PHOTO-FINISH Taiko Pharmaceutical
CPC-FOCUS F04C · 14 areas
INNOV-THIN 26.9/100
CLAIMS-SPARSE 4.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -62% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Taiko Pharmaceutical Co., 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.

How TBK’s 26.9 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 8.9 pts (33%) Velocity 2.2 pts (8%) Breadth 13.2 pts (49%) Claim depth 2.6 pts (10%)

Qualcomm Incorporated · highest

85
TBK · this assignee

27
3D Lighting… · lowest

7

What this shows TBK's Innovation Score is 26.9/100 (22nd 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 TBK?

Each dot is one of TBK’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). TBK’s own 4.3 claims/patent is at or below the 9.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where TBK's grants concentrate

TBK Co., Ltd. is a focused PatentsView assignee: 14 CPC subclasses with 33.3% of grants classified under F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps). Peak complete grant year is 2017 (3 grants) versus a trough of 1 in 2016. By volume, TBK sits between Taiko Pharmaceutical Co., Ltd. and Technolas Perfect Vision GMBH.

TBK's three-year grant acceleration

TBK Co., Ltd. shows 1 grants in 2022–2024 against only 3 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.

Taiko Pharmaceuti…

12
Taiwan Alpha

12
Taiwan Main Ortho…

12
TAK Logic

12
TCL AIR Condition…

12
Technische Univer…

12
Techno Polymer

12
Technolas Perfect…

12
TBK ◀

12

What this shows TBK holds 12 patents at rank #23,492, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near TBK

By rank, the assignees closest to #23,492 in granted patent volume.

Leaders in F04C (Rotary-piston)

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

TBK's Innovation Score vs. every tracked assignee

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

27 22nd percentile higher than 22% 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

TBK Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	16.7%
2016	1	8.3%
2017	3	25.0%
2018	1	8.3%
2019	1	8.3%
2020	1	8.3%
2021	1	8.3%
2024	1	8.3%
2025partial year	1	8.3%

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

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 4

F04D - Non-positive-displacement Pumps 4

F01P - Cooling OF Machines OR Engines IN GENERAL; Cooling OF Internal-combustion Engines 3

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 2

F05D - Indexing Scheme FOR Aspects Relating TO Non-positive-displacement Machines OR Engines, Gas-turbines OR Jet-propulsion Plants 2

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 2

H02K - Dynamo-electric Machines 2

F01C - Rotary-piston OR Oscillating-piston Machines OR Engines 1

F05B - Indexing Scheme Relating TO Wind, Spring, Weight, Inertia OR Like Motors, TO Machines OR Engines FOR Liquids Covered BY Subclasses F03b, F03d AND F03g 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

B60K - Arrangement OR Mounting OF Propulsion Units OR OF Transmissions IN VEHICLES; Arrangement OR Mounting OF Plural Diverse Prime-movers IN VEHICLES; Auxiliary Drives FOR VEHICLES; Instrumentation OR Dashboards FOR VEHICLES; Arrangements IN Connection With Cooling, AIR Intake, GAS Exhaust OR Fuel Supply 1

B60L - Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic Suspension OR Levitation FOR VEHICLES; Monitoring Operating Variables OF Electrically-propelled Vehicl 1

F01M - Lubricating OF Machines OR Engines IN GENERAL; Lubricating Internal Combustion ENGINES; Crankcase Ventilating 1

F16H - Gearing 1

Top 14 of 14 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

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

TBK Co., Ltd.'s lead technology class is F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps), 33.3% of its portfolio - see every assignee active in that class. Explore F04C
Ranked #23,506 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare TBK Co., Ltd. against Taiko Pharmaceutical Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 26.9/100 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.