Granted Patent
Utility
US 6,458,443 · App. 09/121,980
Compositions and methods for imparting stain resistance
Inventors:
Robert Collier, J. Todd Mull
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: Jul 24, 1998
Inventors
Robert Collier
J. Todd Mull
Assignee (at issue)
Arrow Engineering, Inc.
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.