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USPTO Data Jan 1 1976 - Sep 22 2026
12 Patents
#425 in Osaka
#3,928 in Japan
#48,055 in the World
Osaka Vacuum, Ltd.
Forward Citations = 43
15 inventors:
Osaka Vacuum, Ltd.
% Expired Patents = 8.3
EPO Patents = 3
Trademarks = 3
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 24 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:
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.
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3 patents (EPO):
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