Granted Patent
Utility
US 4,774,210 · App. 06/935,791
Densification aid for aluminum borate products
Inventor:
Siba P. Ray
Patented Case
View Patent ↗
Granted: Sep 27, 1988
Filed: Nov 28, 1986
Inventor
Siba P. Ray
Assignee (at issue)
Aluminum Company of America
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.