Granted Patent
Utility
US 5,817,154 · App. 08/520,389
Process for treating stained fabrics with manganese phthalocyanines
Inventors:
Peter Gregory, Stephen James Reynolds, Raymond L. White
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Aug 29, 1995
Inventors
Peter Gregory
Stephen James Reynolds
Raymond L. White
Assignee (at issue)
Zeneca Limited
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.