IP Library › Granted Patent US 4,877,557
Granted Patent Utility
US 4,877,557 · App. 07/155,076

Lubricating oil composition

Inventors: Ryousuke Kaneshige, Kinya Mizui
Patented Case View Patent ↗
Granted: Oct 31, 1989 Filed: Feb 11, 1988
Inventors
Ryousuke Kaneshige
Kinya Mizui
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.

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Quick Facts
Patent No.
US 4,877,557
App. No.
07/155,076
Filed
1988-02-11
Granted
1989-10-31
Kind
A