% Expired Patents = 100.0

EPO Patents = 2

Forward Citations = 1

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6 inventors (with patents filed for the assignee):

Tsuguo Fukuda (2 out of 27 patents)

Tomohiko Satonaga (2 out of 6 patents)

Hirohisa Kikuyama (2 out of 32 patents)

4. Akira Yoshikawa (1 out of 28 patents)

5. Hiroki Sato (1 out of 26 patents)

6. Tsuguo Fududa (1 out of 1 patent)

7. Tsuguo c/o Fukuda Crystal Laboratory Fukuda (0 patent)

8. Tomohiko c/o Stella Chemifa Kk Satonaga (0 patent)

9. Hirohisa c/o Stella Chemifa Kk Kikuyama (0 patent)

10. Tomohiko c/o Stella Chemifa KK Satonaga (0 patent)

3 patents: Sort by Forward Citations

1. 8333838 - Method for producing fluoride crystal (2012-12-18),

2. 7947192 - Gallate single crystal, process for producing the same, piezoelectric device for high-temperature use and piezoelectric sensor for high-temperature use (2011-05-24),

3. 7413606 - Method for producing crystal of fluoride (2008-08-19),

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

3 Patents

#22 in Miyagi

#8,922 in Japan

Miyagi, Japan

Fukuda Crystal Laboratory

Forward Citations = 1

6 inventors:

Tsuguo Fukuda (2 out of 27 patents)

Tomohiko Satonaga (2 out of 6 patents)

Hirohisa Kikuyama (2 out of 32 patents)

4. Akira Yoshikawa (1 out of 28 patents)

5. Hiroki Sato (1 out of 26 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fukuda Crystal Laboratory. Retrieved from https://idiyas.com/company/fukuda-crystal-laboratory

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]