Granted Patent
Utility
US 5,120,858 · App. 07/675,344
Process for the preparation of trimethine dyestuffs
Inventors:
Charles W. Sandefur, Brian Thompson, James J. Good
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: Mar 25, 1991
Inventors
Charles W. Sandefur
Brian Thompson
James J. Good
Assignee (at issue)
Miles Inc.
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.