Granted Patent
Utility
US 5,393,381 · App. 08/074,026
Process for the manufacture of a paper or a cardboard having improved retention
Inventors:
René Hund, Eric Philibert
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Jun 2, 1993
Inventors
René Hund
Eric Philibert
Assignee (at issue)
SNF GROUP
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.