Granted Patent
Utility
US 4,954,636 · App. 07/374,891
Antimicrobial polymeric bisbiguanides
Inventors:
John J. Merianos, Paul Garelick
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Jul 3, 1989
Inventors
John J. Merianos
Paul Garelick
Assignee (at issue)
GAF Chemicals 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.