Granted Patent
Utility
US 6,432,909 · App. 09/636,659
Water soluble dye complexing polymers
Inventors:
Bala Srinivas, Jenn S. Shih, David E. Graham, Michael Drzewinski
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Aug 11, 2000
Inventors
Bala Srinivas
Jenn S. Shih
David E. Graham
Michael Drzewinski
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.