% Expired Patents = 60.0

EPO Patents = 2

Forward Citations = 11

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3 inventors (with patents filed for the assignee):

Takashi Fujii (5 out of 7 patents)

Hidemi Ukai (2 out of 4 patents)

Shigeki Kagomiya (1 out of 2 patents)

4. Yamada Takeshi (1 patent)

5. Umemoto Yoshiyuki (0 patent)

6. Saito Yoshiyuki (0 patent)

7. Mizuno Hiroaki (0 patent)

8. Kato Nobuaki (0 patent)

5 patents: Sort by Forward Citations

1. 10496056 - Measured value analysis apparatus and measured value analysis method (2019-12-03),

2. 8816674 - Method for detecting concentration of particles and device therefor (2014-08-26),

3. 8659287 - Hard particle concentration detecting method (2014-02-25),

4. 8115478 - Device and method for measuring concentration of magnetic material (2012-02-14),

5. 8037740 - Conductive material concentration measuring device and magnetic material concentration measuring device (2011-10-18),

Company Overview

Diesel United, Ltd. is a leading provider of diesel engine parts and services. With over 20 years of experience, we offer a wide range of products including fuel injection systems, turbochargers, and engine components for various applications. Our team of experts is dedicated to providing high-quality solutions and exceptional customer service to clients around the world.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

5 Patents

#2,721 in Tokyo

#6,652 in Japan

Tokyo, Japan

Diesel United, Ltd.

Forward Citations = 11

3 inventors:

Takashi Fujii (5 out of 7 patents)

Hidemi Ukai (2 out of 4 patents)

Shigeki Kagomiya (1 out of 2 patents)

4. Yamada Takeshi (1 patent)

5. Umemoto Yoshiyuki (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Diesel United, Ltd.. Retrieved from https://idiyas.com/company/diesel-united

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]

2 patents (EPO):

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]