Granted Patent
Utility
US 4,900,299 · App. 07/048,338
Biodegradable tampon application comprising poly(3-hydroxybutyric acid)
Inventor:
Andrew Webb
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: May 11, 1987
Inventor
Andrew Webb
Assignee (at issue)
McNeil-PPC, Inc.
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.