Granted Patent
Utility
US 4,566,874 · App. 06/678,314
Water-soluble zinc and aluminium phthalocyanines and use thereof as photoactivators
Inventors:
Gerd Holzle, Mirella Miotto, Gerhard Reinert, Rudolf Polony
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: Dec 5, 1984
Inventors
Gerd Holzle
Mirella Miotto
Gerhard Reinert
Rudolf Polony
Assignee (at issue)
Ciba-Geigy
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.