Granted Patent
Utility
US 4,293,706 · App. 06/161,175
Preparation of N-benzyloxycarbonyl aspartic acid
Inventors:
Susan B. Gorman, Ralph B. Thompson, Edward Yonan
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Jun 19, 1980
Inventors
Susan B. Gorman
Ralph B. Thompson
Edward Yonan
Assignee (at issue)
PPG Industries, 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.