IP Library › Granted Patent US 5,224,993
Granted Patent Utility
US 5,224,993 · App. 07/881,631

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Inventors: Yoshio Takahashi, Shigeto Hatanaka
Patented Case View Patent ↗
Granted: Jul 6, 1993 Filed: May 12, 1992
Inventors
Yoshio Takahashi
Shigeto Hatanaka
Assignee (at issue)
Mitsubishi Oil Co., Ltd.

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Quick Facts
Patent No.
US 5,224,993
App. No.
07/881,631
Filed
1992-05-12
Granted
1993-07-06
Kind
A