Granted Patent
Utility
US 6,451,953 · App. 08/993,425
Chain entanglement crosslinked polymers
Inventor:
Robert L. Albright
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Dec 18, 1997
Inventor
Robert L. Albright
Assignee (at issue)
SUN DRILLING PRODUCTS 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.