Granted Patent
Utility
US 5,011,679 · App. 07/358,149
Raw hide having a coating containing an inorganic pyrophosphate
Inventors:
Henry C. Spanier, Bassey O. Ekpo
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: May 30, 1989
Inventors
Henry C. Spanier
Bassey O. Ekpo
Assignee (at issue)
Nabisco Brands, 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.