Granted Patent
Utility
US 6,193,961 · App. 09/495,129
Personal care composition containing a homogeneous terpolymer of an n-vinyl lactam and a polysiloxane
Inventors:
Kou-Chang Liu, Jenn S. Shih
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Feb 1, 2000
Inventors
Kou-Chang Liu
Jenn S. Shih
Assignee (at issue)
ISP INVESTMENTS LLC
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.