Granted Patent
Utility
US 5,904,808 · App. 08/714,432
Processes and compositions for repulping wet strength paper and paper products
Inventors:
Robert A. Gelman, Josette S. Hyunh-Ba
Patented Case
View Patent ↗
Granted: May 18, 1999
Filed: Sep 16, 1996
Inventors
Robert A. Gelman
Josette S. Hyunh-Ba
Assignee (at issue)
HERCULES 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.