Granted Patent
Utility
US 5,300,642 · App. 07/953,274
.alpha., .alpha.-disubstituted aromatics and heteroaromatics as cognition enhancers
Inventors:
Richard A. Earl, Melvyn J. Myers, Victor J. Nickolson
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Sep 30, 1992
Inventors
Richard A. Earl
Melvyn J. Myers
Victor J. Nickolson
Assignee (at issue)
The DuPont Merck Pharmaceutical Company
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.