Granted Patent
Utility
US 4,537,590 · App. 06/505,579
Superthin absorbent product
Inventors:
Heinz A. Pieniak, Michael Iskra
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Jun 20, 1983
Inventors
Heinz A. Pieniak
Michael Iskra
Assignee (at issue)
Personal Products Company
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.