Granted Patent
Utility
US 5,310,489 · App. 08/067,847
Borate cross-linking solutions
Inventor:
Sharif Sharif
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: May 26, 1993
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.