Granted Patent
Utility
US 5,366,546 · App. 07/977,338
Production of pigment compositions
Inventors:
James McGeachie McCrae, Anne M. Keirs, John Aldred Nimmo
Patented Case
View Patent ↗
Granted: Nov 22, 1994
Filed: Nov 17, 1992
Inventors
James McGeachie McCrae
Anne M. Keirs
John Aldred Nimmo
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.