Granted Patent
Utility
US 5,064,653 · App. 07/175,036
Hydrophilic foam compositions
Inventors:
Robert W. Sessions, Roy D. Carr
Patented Case
View Patent ↗
Granted: Nov 12, 1991
Filed: Mar 29, 1988
Inventors
Robert W. Sessions
Roy D. Carr
Assignee (at issue)
Ferris Mfg. Corp.
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.