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% Expired Patents = 50.0

Forward Citations = 25

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10 inventors (with patents filed for the assignee):

Tsorng-Juu Liang (2 out of 13 patents)

Jiann-Fuh Chen (2 out of 11 patents)

Ching-Chau Su (2 out of 2 patents)

4. Ching-Shun Yi (2 out of 2 patents)

5. Chien-Yi Chen (2 out of 2 patents)

6. Cheng-Chi Tai (1 out of 1 patent)

7. Chen-Chi Tai (1 out of 1 patent)

8. Robin H Hines (1 out of 12 patents)

9. Walter Hohne (1 out of 1 patent)

10. Tsunehisa Yamashita (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 7339447 - High-voltage transformer coil with acoustic wave guiding function (2008-03-04),

2. 7180303 - Simple partial discharge detector for power equipment using acoustic emission technique (2007-02-20),

3. 4305209 - Adaptor (1981-12-15),

4. 4105332 - Apparatus for producing a light beam having a uniform phase front and (1978-08-08),

Precision International Corp. is a leading provider of precision machined components and assemblies for the aerospace, defense, and industrial markets. With over 30 years of experience, we specialize in delivering high-quality products that meet the most stringent requirements and specifications. Our state-of-the-art facilities and highly skilled team ensure that we consistently exceed customer expectations in terms of quality, reliability, and on-time delivery.

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Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

4 Patents

#919 in Taipei

#2,723 in Taiwan

Taipei, Taiwan

Precision International Corp.