Granted Patent
Utility
US 4,276,049 · App. 06/092,315
Method for the determination of an amino or aminosulphonic acid
Inventors:
Dieter Gillessen, William Lergier
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Nov 8, 1979
Inventors
Dieter Gillessen
William Lergier
Assignee (at issue)
HOFFMANN-LA ROCHE 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.