Granted Patent
Utility
US 4,599,432 · App. 06/669,081
Process for preparing a composition containing an alkenyl succinic anhydride
Inventors:
Katsuhiko Kuroda, Hideki Yamanouchi
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Nov 7, 1984
Inventors
Katsuhiko Kuroda
Hideki Yamanouchi
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.