Granted Patent
Utility
US 6,372,874 · App. 09/205,083
Process for the preparation of siloxane-oxyalkylene copolymers
Inventor:
Rudolph A. Cameron
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Dec 4, 1998
Inventor
Rudolph A. Cameron
Assignee (at issue)
Crompton 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.