Granted Patent
Utility
US 6,620,521 · App. 09/663,010
Water-resistant color inkjet receptive films
Inventors:
Yoon Tae Kwak, Stephen L. Kopolow
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Sep 15, 2000
Inventors
Yoon Tae Kwak
Stephen L. Kopolow
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.