Where does Tdk-lambda Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Tdk-lambda Ltd ranks #19,223 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 Tdk-lambda Ltd hold?

Tdk-lambda Ltd holds 15 US utility patents granted between 2015 and 2020, spanning 8 technology areas.

What is Tdk-lambda Ltd's Innovation Score?

Tdk-lambda Ltd has an Innovation Score of 25.4 out of 100 (17th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Tdk-lambda Ltd's patent grant rate increasing or decreasing?

Tdk-lambda Ltd's recent grant velocity is -85% 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 Tdk-lambda Ltd's patents?

Tdk-lambda Ltd's patents average 9.7 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 Tdk-lambda 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

Tdk-lambda Ltd

Q: What technology areas does Tdk-lambda Ltd focus on?

Tdk-lambda Ltd's top technology area is 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) with 6 patents, ranking #444 of 1,541 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

USPTO PatentsView assignee record - 15 granted patents across 8 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: 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;).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Tdk-lambda ranks #19,223 of 49,997 tracked US assignees by granted-patent volume, with 15 patents across 8 technology areas.

#19,223
of 49,997 US assignees by volume: 17th percentile
by Innovation Score (25.4/100): 9.7
avg claims per patent: -85%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R19223 · Foreign Corporation #19,223 · 15 grants

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

GRANTS-MICRO 15 grants
MID-PACK #19,223/49,997
PHOTO-FINISH Tatung University
CPC-NARROW H02M · 8 areas
INNOV-THIN 25.4/100
CLAIMS-PAR 9.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -85% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Tatung University (±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 Tdk-lambda’s 25.4 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 9.6 pts (38%) Velocity 0.0 pts (0%) Breadth 10.0 pts (39%) Claim depth 5.8 pts (23%)

Qualcomm Incorporated · highest

85
Tdk-lambda · this assignee

25
3D Lighting… · lowest

7

What this shows Tdk-lambda's Innovation Score is 25.4/100 (17th 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 Tdk-lambda?

Each dot is one of Tdk-lambda’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). Tdk-lambda’s own 9.7 claims/patent is at or below the 16.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Tdk-lambda's grants concentrate

Tdk-lambda Ltd is a focused PatentsView assignee: 8 CPC subclasses with 40% of grants classified under 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;). Peak complete grant year is 2015 (5 grants) versus a trough of 1 in 2018. By volume, Tdk-lambda sits between Tatung University and Teleperformance SE.

Tatung University

15
TBS Engineering

15
TCL Communi Cati…

15
Tcms Transparent…

15
Team IP Holdings

15
Techinsights

15
Tegway

15
Teleperformance SE

15
Tdk-lambda ◀

15

What this shows Tdk-lambda holds 15 patents at rank #19,214, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tdk-lambda

By rank, the assignees closest to #19,214 in granted patent volume.

Leaders in H02M (Apparatus FOR Conversion Between AC AND AC)

Other assignees with the most granted patents in Tdk-lambda's primary technology class.

Tdk-lambda's Innovation Score vs. every tracked assignee

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

25 17th percentile higher than 17% 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

Tdk-lambda Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	5	33.3%
2016	3	20.0%
2018	1	6.7%
2019	4	26.7%
2020	2	13.3%

Which technologies does Tdk-lambda Ltd patent most?

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 6

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 5

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 3

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 2

G05F - Systems FOR Regulating Electric OR Magnetic Variables 2

Y10T - Technical Subjects Covered BY Former US Classification 2

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

Y04S - Systems Integrating Technologies Related TO Power Network Operation, Communication OR Information Technologies FOR Improving THE Electrical Power Generation, Transmission, Distribution, Management OR Usage, i.e. Smart Grids 1

Top 8 of 8 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

Tdk-lambda Ltd's patent record in context - here's where to go next.

Tdk-lambda Ltd's lead technology class is 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;), 40% of its portfolio - see every assignee active in that class. Explore H02M
Ranked #19,223 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tdk-lambda Ltd against Tatung University, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 25.4/100 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.