Granted Patent
Utility
US 5,160,445 · App. 07/705,605
Borate cross-linking solutions
Inventor:
Sharif Sharif
Patented Case
View Patent ↗
Granted: Nov 3, 1992
Filed: May 24, 1991
Inventor
Sharif Sharif
Assignee (at issue)
Zirconium Technology Corporation
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.