IP Library › Granted Patent US 4,962,227
Granted Patent Utility
US 4,962,227 · App. 07/343,222

Methylphosphonic acid amine salt lubricant additives

Inventors: Hermann O. Wirth, Klaus Muller
Patented Case View Patent ↗
Granted: Oct 9, 1990 Filed: Apr 26, 1989
Inventors
Hermann O. Wirth
Klaus Muller
Assignee (at issue)
Ciba-Geigy

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Quick Facts
Patent No.
US 4,962,227
App. No.
07/343,222
Filed
1989-04-26
Granted
1990-10-09
Kind
A