Granted Patent
Utility
US 4,870,105 · App. 07/035,341
Phosphorus binder
Inventor:
John Fordtran
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Apr 7, 1987
Inventor
John Fordtran
Assignee (at issue)
Braintree Laboratories, 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.