Granted Patent
Utility
US 6,806,334 · App. 10/663,565
Proliferous copolymer of vinyl pyrrolidone and vinyl acetate
Inventors:
Edward G. Malawer, James P. Cullen, Chi-San Wu, Laurence Senak, William Drefko, David K. Hood, Peter J. Brush
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Sep 16, 2003
Inventors
Edward G. Malawer
James P. Cullen
Chi-San Wu
Laurence Senak
William Drefko
David K. Hood
Peter J. Brush
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.