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For the Inventor, By the Inventor

JP

Densei Lambda K.k.


USPTO Granted Patents = 8

% Expired Patents = 12.5

Forward Citations = 65

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14 inventors (with patents filed for the assignee):

goldMedal Fujitaka Togashi (3 out of 4 patents)

silverMedal Katsuhiko Nakane (2 out of 3 patents)

bronzeMedal Hirokazu Kadoi (2 out of 2 patents)

4.  Akinori Miyazaki (2 out of 2 patents)

5.  Kazuhiko Takano (2 out of 2 patents)

6.  Koichi Soeda (2 out of 3 patents)

7.  Koji Okano (2 out of 2 patents)

8.  Hiroto Terashi (1 out of 3 patents)

9.  Kazuhiro Iwai (1 out of 5 patents)

10.  Hideho Yamamura (1 out of 14 patents)

11.  Naoki Maru (1 out of 9 patents)

12.  Satoshi Tomioka (1 out of 5 patents)

13.  Motoharu Ueguri (1 out of 1 patent)

14.  Hiroyuki Oka (1 out of 5 patents)


8 patents:

1. 8138910 - Uninterruptible power supply unit (2012-03-20),
2. D622659 - Battery pack for uninterruptible power supply (2010-08-31),
3. 7525218 - Uninterruptible power supply, uninterruptible power supply system and shutdown processing program product (2009-04-28),
4. 7444208 - Electrical system wiring diagram generating system, and power supply device and program used for the same (2008-10-28),
5. D573533 - Uninterruptible power supply (2008-07-22),
6. 7355829 - Overvoltage protection circuit, and power source, power supply system and electronic apparatus using the overvoltage protection circuit (2008-04-08),
7. 7181630 - Uninterrupted power supply managing system displays connection tree generated from connection information between interrupted power supply device and load devices received from lower controller (2007-02-20),
8. 6483721 - Resonant power converter (2002-11-19),
Company Overview
Densei Lambda K.K. is a leading manufacturer of high-quality power supplies and DC-DC converters. With over 40 years of experience in the industry, we provide reliable and efficient solutions for various applications including telecommunications, industrial automation, and medical equipment. Our products are known for their superior performance, compact design, and long-term reliability. Visit our website to learn more about our innovative power solutions.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

8 Patents

#140 in

#5,049 in Japan

JP
JP

Densei Lambda K.k.

Forward Citations = 65

14 inventors:

goldMedal Fujitaka Togashi (3 out of 4 patents)

silverMedal Katsuhiko Nakane (2 out of 3 patents)

bronzeMedal Hirokazu Kadoi (2 out of 2 patents)

4.  Akinori Miyazaki (2 out of 2 patents)

5.  Kazuhiko Takano (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Densei Lambda K.k.. Retrieved from https://idiyas.com/company/densei-lambda-k-k

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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