Yamamoto Limited

Calculating rank

USPTO Granted Patents = 4

% Expired Patents = 25.0

EPO Patents = 1

Trademarks = 3

Forward Citations = 107

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6 inventors (with patents filed for the assignee):

Carmel Buttigieg (3 out of 3 patents)

Toyoaki Ohashi (1 out of 3 patents)

Mitsuo Yamamoto (1 out of 1 patent)

4. Tsuyoshi Yamamoto (1 out of 1 patent)

5. Shinichi Fujitani (1 out of 1 patent)

6. Takatsugu Tahara (1 out of 1 patent)

7. Mitsuo Yamamoto (0 patent)

8. Shinichi Fujitani (0 patent)

9. Tsuyoshi Yamamoto (0 patent)

4 patents: Sort by Forward Citations

1. 9131666 - Hatching egg inspection apparatus (2015-09-15),

2. 6668388 - Retractable and disposable urinal (2003-12-30),

3. 6519873 - Plastic bellows inserted into soles (2003-02-18),

4. 6463679 - Forced ventilation system inside soles (2002-10-15),

Company Overview

Yamamoto Limited is a global leader in manufacturing high-quality electronic components such as resistors, capacitors, and inductors. With a strong focus on innovation and quality, Yamamoto Limited serves a wide range of industries including automotive, telecommunications, and consumer electronics. Their commitment to excellence has established them as a trusted partner for clients seeking reliable and cutting-edge electronic solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

4 Patents

#5 in Valletta

#31 in Malta

Valletta, Malta

Yamamoto Limited

Forward Citations = 107

6 inventors:

Carmel Buttigieg (3 out of 3 patents)

Toyoaki Ohashi (1 out of 3 patents)

Mitsuo Yamamoto (1 out of 1 patent)

4. Tsuyoshi Yamamoto (1 out of 1 patent)

5. Shinichi Fujitani (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yamamoto Limited. Retrieved from https://idiyas.com/company/yamamoto

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]

1 patent (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]