IP Library › Granted Patent US 4,116,983
Granted Patent Utility
US 4,116,983 · App. 05/800,141

Two stage maleic anhydride process

Inventor: John P. Schmidt
Patented Case View Patent ↗
Granted: Sep 26, 1978 Filed: May 24, 1977
Inventor
John P. Schmidt
Assignee (at issue)
Halcon International, Inc.

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Quick Facts
Patent No.
US 4,116,983
App. No.
05/800,141
Filed
1977-05-24
Granted
1978-09-26
Kind
A