Granted Patent
Utility
US 6,387,448 · App. 09/338,250
Compositions and methods for imparting bleach resistance
Inventors:
Robert Collier, J. Todd Mull
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Jun 22, 1999
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.