Granted Patent
Utility
US 5,453,546 · App. 08/252,865
Method for the production of .beta.-ionone from pseudoionone
Inventors:
Kurt Steiner, Herwig Ertel, Helmut Tiltscher
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Jun 2, 1994
Inventors
Kurt Steiner
Herwig Ertel
Helmut Tiltscher
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.