Granted Patent
Utility
US 5,290,945 · App. 07/925,446
Process for preparing bisimide products
Inventors:
Ranjit Roy, Ali M. Dadgar, Donald O. Hutchinson, Keith G. Anderson
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Aug 11, 1992
Inventors
Ranjit Roy
Ali M. Dadgar
Donald O. Hutchinson
Keith G. Anderson
Assignee (at issue)
Ethyl 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.