Where does TDK Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), TDK Corporation ranks #129 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 Corporation hold?

TDK Corporation holds 2,914 US utility patents granted between 2015 and 2025, spanning 171 technology areas.

What is TDK Corporation's Innovation Score?

TDK Corporation has an Innovation Score of 66.6 out of 100 (top 1% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does TDK Corporation focus on?

TDK Corporation's top technology area is H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties) with 904 patents, ranking #2 of 1,360 assignees active in that subclass. Grants appear in 171 CPC subclasses total.

Is TDK Corporation's patent grant rate increasing or decreasing?

TDK Corporation's recent grant velocity is +65% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for TDK Corporation's patents?

TDK Corporation's patents average 11.4 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 Corporation 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 Corporation

USPTO PatentsView assignee record - 2,914 granted patents across 171 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: H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, TDK ranks #129 of 49,997 tracked US assignees by granted-patent volume, with 2,914 patents across 171 technology areas.

#129
of 49,997 US assignees by volume: Top 1%
by Innovation Score (66.6/100): 11.4
avg claims per patent: +65%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R129 · Foreign Corporation #129 · 2,914 grants

GRANTS-LARGE · TOP-DECILE · NEAR-PEER · CPC-WIDE · INNOV-STRONG · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-LARGE 2.9K grants
TOP-DECILE #129/49,997
NEAR-PEER Juniper Networks
CPC-WIDE H01F · 171 areas
INNOV-STRONG 66.6/100
CLAIMS-PAR 11.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +65% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Juniper Networks, Inc. (±12 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’s 66.6 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 27.6 pts (41%) Velocity 7.2 pts (11%) Breadth 25.0 pts (38%) Claim depth 6.8 pts (10%)

Qualcomm Incorporated · highest

85
Genentech · near

67
Lumentum Operations · near

67
TDK · this assignee

67
The General Hospital · near

67
Polaris Industries · near

67
3D Lighting… · lowest

7

What this shows TDK's Innovation Score is 66.6/100 (top 1% 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?

Each dot is one of TDK’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’s own 11.4 claims/patent is at or below the 15.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How TDK's grant cadence moved

Between 2020–2024, TDK Corporation received 1,648 grants versus 1,001 in 2015–2019 (+65% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2022 at 362 grants and bottomed in 2016 at 158. Lead class H01F accounts for 31% of the portfolio across 171 subclasses. Volume neighbours: Industrial Technology Research Institute (#125) and Sony Semiconductor Solutions Corporation (#133).

TDK's three-year grant acceleration

From 2019–2021 to 2022–2024, TDK Corporation moved from 932 to 1,007 grants (1.08x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,000. See the growth leaderboard.

Industrial Techno…

3,023
Adobe

3,022
DOW Global

3,004
Toshiba Memory

2,972
TDK ◀

2,914
Juniper Networks

2,902
Beijing Xiaomi Mo…

2,840
Comcast Cable Com…

2,828
Sony Semiconducto…

2,791

What this shows TDK holds 2,914 patents at rank #129, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near TDK

By rank, the assignees closest to #129 in granted patent volume.

Leaders in H01F (Magnets)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for TDK, neither rank-band nor same-CPC leaders (those blocks stay above). In H01F (Magnets), TDK ranks #2 of 1,360 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (67 here).

The General Hospital Corporation 67 Polaris Industries Inc. 67 Lumentum Operations LLC 67 Genentech, Inc. 67

Similar claim depth

Nearest assignees by average claims per patent (11.4 here).

Canon Finetech Nisca Inc. 11.4 avg New York Air Brake LLC 11.4 avg Furukawa Electric Co., Ltd. 11.4 avg Goertek Inc. 11.4 avg

TDK's Innovation Score vs. every tracked assignee

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

67 Top 1% higher than 99% 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

TDK Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	160	5.5%
2016	158	5.4%
2017	202	6.9%
2018	190	6.5%
2019	291	10.0%
2020	329	11.3%
2021	312	10.7%
2022	362	12.4%
2023	351	12.0%
2024	294	10.1%
2025partial year	265	9.1%

Which technologies does TDK Corporation patent most?

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 904

H10N - Electric Solid-state Devices NOT Otherwise Provided FOR 453

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 405

H01G - CAPACITORS; Capacitors, Rectifiers, Detectors, Switching Devices, Light-sensitive OR Temperature-sensitive Devices OF THE Electrolytic Type 389

H10B - Electronic Memory Devices 205

G11C - Static Stores 194

H01L - Semiconductor Devices NOT Covered BY Class H10 186

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 180

G11B - Information Storage Based ON Relative Movement Between Record Carrier AND Transducer 174

C22C - Alloys 170

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 164

H10D - Inorganic Electric Semiconductor Devices 155

H03H - Impedance Networks, e.g. Resonant CIRCUITS; Resonators 149

G01D - Measuring NOT Specially Adapted FOR A Specific VARIABLE; Arrangements FOR Measuring TWO OR More Variables NOT Covered IN A Single Other SUBCLASS; Tariff Metering APPARATUS; Measuring OR Testing NOT Otherwise Provided FOR 131

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 122

Top 15 of 171 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 Corporation's patent record in context - here's where to go next.

TDK Corporation's lead technology class is H01F (MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties), 31% of its portfolio - see every assignee active in that class. Explore H01F
Ranked #129 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare TDK Corporation against Industrial Technology Research Institute, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 66.6/100 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.