Granted Patent
Utility
US 5,008,355 · App. 07/501,059
Slurry polymerization of maleic anhydride and acrylic acid in a cosolvent system of ethyl acetate and cyclohexane
Inventors:
Mohammed Tazi, Krystyna Plochocka
Patented Case
View Patent ↗
Granted: Apr 16, 1991
Filed: Mar 29, 1990
Inventors
Mohammed Tazi
Krystyna Plochocka
Assignee (at issue)
GAF Chemicals Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.