Granted Patent
Utility
US 4,925,955 · App. 07/316,623
Resolution of (1S,4R)-1-ethyl-1,3,4,9-tetrahydro-4-(phenylmethyl) pyrano[3,4-B]indole-1-acetic acid using brucine
Inventors:
Andre A. Asselin, Jean Schmid
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Feb 28, 1989
Inventors
Andre A. Asselin
Jean Schmid
Assignee (at issue)
Amerimas Home Products, 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.