Granted Patent
Utility
US 6,015,896 · App. 09/051,268
Phthalocyanine compounds
Inventors:
Prahalad Manibhai Mistry, Ronald Wynford Kenyon
Patented Case
View Patent ↗
Granted: Jan 18, 2000
Filed: Apr 7, 1998
Inventors
Prahalad Manibhai Mistry
Ronald Wynford Kenyon
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.