Granted Patent
Utility
US 4,879,414 · App. 07/156,692
Polythiols and use as epoxy resin curing agents
Inventors:
Grannis S. Johnson, Reuben H. Grinstein, Stuart J. Hartman, Raymond P. Dallago
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Feb 17, 1988
Inventors
Grannis S. Johnson
Reuben H. Grinstein
Stuart J. Hartman
Raymond P. Dallago
Assignee (at issue)
Henkel Limited
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.