Granted Patent
Utility
US 4,798,744 · App. 07/044,500
Fixation of polymers retaining liquids in a porous structure
Inventors:
Guy Goldstein, Michel Pierre
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Mar 23, 1987
Inventors
Guy Goldstein
Michel Pierre
Assignee (at issue)
Beghin-Say, S.A.
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.