Granted Patent
Utility
US 5,484,915 · App. 08/268,578
Sulphonated manganese phthalocyanines and compositions thereof
Inventors:
Peter Gregory, Stephen James Reynolds, Raymond L. White
Patented Case
View Patent ↗
Granted: Jan 16, 1996
Filed: Jul 6, 1994
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.