Kabushiki Kaisha Gemvac

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USPTO Granted Patents = 6

Forward Citations = 51

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9 inventors (with patents filed for the assignee):

Shinzo Sakuma (5 out of 19 patents)

Hifumi Yanagisawa (3 out of 9 patents)

Hiroshi Miyagawa (2 out of 7 patents)

4. Kazuo Tokuhata (2 out of 4 patents)

5. Yoshiyuki Kashiwagi (1 out of 19 patents)

6. Shuzo Tanigaki (1 out of 6 patents)

7. Tsutae Suzuki (1 out of 1 patent)

8. Naoki Kondo (1 out of 2 patents)

9. Junichi Warabi (1 out of 12 patents)

6 patents: Sort by Forward Citations

1. 4434331 - Vacuum power interrupting device (1984-02-28),

2. 4429197 - Vacuum power interrupting device (1984-01-31),

3. 4365127 - Vacuum power interrupter (1982-12-21),

4. 4361742 - Vacuum power interrupter (1982-11-30),

5. 4293748 - Vacuum circuit interrupter electrodes (1981-10-06),

6. 4077114 - Vacuum power interrupter (1978-03-07),

Company Overview

Kabushiki Kaisha Gemvac is a leading Japanese company specializing in vacuum technology. With a strong focus on innovation and quality, Gemvac provides a wide range of vacuum pumps, blowers, and systems for various industries including semiconductor, pharmaceutical, and research. Known for their reliable products and excellent customer service, Gemvac has established a reputation as a trusted partner in the vacuum technology industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

6 Patents

#2,469 in Tokyo

#5,990 in Japan

Tokyo, Japan