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Osaka Vacuum, Ltd.

USPTO Granted Patents = 12

EPO Patents = 3

Trademarks = 4

Forward Citations = 43

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15 inventors (with patents filed for the assignee):

Tetsuro Ohbayashi (8 out of 8 patents)

Masashi Iguchi (8 out of 8 patents)

Tatsuji Ikegami (6 out of 6 patents)

4. Keiichi Yoshida (5 out of 5 patents)

5. Yukio Yamato (1 out of 1 patent)

6. Tetsuro Obayashi (1 out of 1 patent)

7. Mitsunori Watanabe (1 out of 1 patent)

8. Takeshi Shoji (1 out of 2 patents)

9. Tetsuya Abe (1 out of 22 patents)

10. Hiroshi Sugimoto (1 out of 1 patent)

11. Yoshio Sone (1 out of 1 patent)

12. Seiji Hiroki (1 out of 12 patents)

13. Yoshio Murakami (1 out of 15 patents)

14. Junichi Nakamura (1 out of 1 patent)

15. Tadashi Sawada (1 out of 1 patent)

12 patents: Sort by Forward Citations

1. 9964112 - Molecular pump (2018-05-08),

2. 8853905 - Radial direction controller and magnetic bearing apparatus utilizing same (2014-10-07),

3. 8449195 - Retainer of ball bearing (2013-05-28),

4. 8337164 - Turbomolecular pump (2012-12-25),

5. 7909583 - Pump apparatus and pump unit thereof (2011-03-22),

6. 5632597 - Thread groove type vacuum pump (1997-05-27),

7. 5221179 - Vacuum pump (1993-06-22),

8. 5219269 - Vacuum pump (1993-06-15),

9. 5217346 - Vacuum pump (1993-06-08),

10. 5160250 - Vacuum pump with a peripheral groove pump unit (1992-11-03),

11. 5074747 - Vacuum pump (1991-12-24),

12. 4708586 - Thread groove type vacuum pump (1987-11-24),

Osaka Vacuum, Ltd. is a leading manufacturer of high-quality vacuum pumps and systems. With over 30 years of experience, we provide reliable solutions to a wide range of industries including semiconductor, medical, and research. Our products are known for their durability, efficiency, and performance, making us a trusted partner for businesses worldwide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

12 Patents

#366 in Osaka

#3,840 in Japan

#46,762 in the World

Osaka Vacuum, Ltd.

Forward Citations = 43

15 inventors:

Tetsuro Ohbayashi (8 out of 8 patents)

Masashi Iguchi (8 out of 8 patents)

Tatsuji Ikegami (6 out of 6 patents)

4. Keiichi Yoshida (5 out of 5 patents)

5. Yukio Yamato (1 out of 1 patent)

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