Granted Patent
Utility
US 5,506,708 · App. 07/380,437
Substituted phthalocyanines
Inventors:
Kenneth J. Harrison, Michael J. Cook, Andrew J. Thomson, Neil Bruce McKeown, Mervyn F. Daniel, Adrian Dunn
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Jul 17, 1989
Inventors
Kenneth J. Harrison
Michael J. Cook
Andrew J. Thomson
Neil Bruce McKeown
Mervyn F. Daniel
Adrian Dunn
Assignee (at issue)
The Secretary of State for Defence in Her Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
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.