Granted Patent
Utility
US 6,482,880 · App. 09/543,113
Poly(biphenyl ether sulfone) resins having improved UV yellowing resistance
Inventor:
John A. Rock
Patented Case
View Patent ↗
Granted: Nov 19, 2002
Filed: Apr 5, 2000
Inventor
John A. Rock
Assignee (at issue)
Solvay Advanced Polymers, L.L.C.
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.