Granted Patent
Utility
US 5,652,336 · App. 08/620,936
Polymer-bound mixed carboxylic anhydrides as a stable form of activated carboxylic acids
Inventors:
Wilmer K. Fife, Daniel F. Shullenberger
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Mar 22, 1996
Inventors
Wilmer K. Fife
Daniel F. Shullenberger
Assignee (at issue)
THE TRUSTEES OF INDIANA UNIVERSITY
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.