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For the Inventor, By the Inventor

Tokyo, Japan

Tdk-Lambda Corporation


USPTO Granted Patents = 31

% Expired Patents = 38.7


Trademarks = 3

Forward Citations = 955

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36 inventors (with patents filed for the assignee):

goldMedal George Rucareanu (6 out of 9 patents)

silverMedal Jin He (5 out of 30 patents)

bronzeMedal Hiroshi Nakazawa (5 out of 17 patents)

4.  Jeffrey John Boylan (4 out of 21 patents)

5.  Miki Stravets (4 out of 5 patents)

6.  Eiji Takegami (3 out of 19 patents)

7.  Tadao Senriuchi (3 out of 10 patents)

8.  Gordon K Y Lee (3 out of 4 patents)

9.  Masahiko Hirokawa (3 out of 11 patents)

10.  Takumi Sakamoto (3 out of 3 patents)

11.  Noriyuki Hirao (3 out of 3 patents)

12.  Carl M Wildrick (3 out of 10 patents)

13.  Roman Kufman (3 out of 3 patents)

14.  Kazunori Oshima (2 out of 34 patents)

15.  Kazushi Watanabe (2 out of 8 patents)


Core Competencies:
Power Supply
DC-DC Converter
Voltage Regulator
Thermal Management
LED Drive Device
Battery Protection Circuit
Digital Controller
Load Drive Device
Multi-Level Voltage Regulator
Uninterruptible Power Supply
Feedback Control
Inductor

31 patents:

1. 10674626 - Scalable structure for connection of power supply units (2020-06-02),
2. D877074 - Power supply (2020-03-03),
3. 10218265 - State space-based multi-level voltage regulator system (2019-02-26),
4. D837154 - Power supply combined with dust filter (2019-01-01),
5. D837153 - Power supply combined with dust filter (2019-01-01),
6. D837151 - Rectifier for power supply (2019-01-01),
7. D813163 - Power supply (2018-03-20),
8. 9520772 - Multi-level voltage regulator system (2016-12-13),
9. D769820 - Power supply device (2016-10-25),
10. 9408327 - Thermal management system and method (2016-08-02),
11. 9143047 - Loosely regulated feedback control for high efficiency isolated DC-DC converters (2015-09-22),
12. 9119327 - Thermal management system and method (2015-08-25),
13. D732471 - Power supply device (2015-06-23),
14. 8934267 - Loosely regulated feedback control for high efficiency isolated DC-DC converters (2015-01-13),
15. 8929098 - DC-DC converter (2015-01-06),
Company Overview
TDK-Lambda Corporation, headquartered in Tokyo, specializes in the design and manufacture of power supply solutions. The company focuses on a wide range of applications, including industrial automation, medical devices, and telecommunications. With a commitment to innovation, TDK-Lambda develops advanced power management technologies that enhance efficiency and reliability. The organization serves a global market, providing tailored solutions that meet the diverse needs of its customers across various sectors.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

31 Patents

#1,041 in Tokyo

#2,269 in Japan

#21,238 in the World

Tokyo, JP
Tokyo, Japan

Tdk-Lambda Corporation

Forward Citations = 955

36 inventors:

goldMedal George Rucareanu (6 out of 9 patents)

silverMedal Jin He (5 out of 30 patents)

bronzeMedal Hiroshi Nakazawa (5 out of 17 patents)

4.  Jeffrey John Boylan (4 out of 21 patents)

5.  Miki Stravets (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tdk-Lambda Corporation. Retrieved from https://idiyas.com/company/tdk-lambda

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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