Granted Patent
Utility
US 5,147,787 · App. 07/228,426
Recovery of imageable polyacetylenes from binder containing aqueous dispersions
Inventors:
David F. Lewis, Robert D. Schenfele
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Aug 5, 1988
Inventors
David F. Lewis
Robert D. Schenfele
Assignee (at issue)
ISP INVESTMENTS LLC
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.