Granted Patent
Utility
US 6,136,972 · App. 09/510,415
Preparation of a mannich base intermediate for 2-[(4-heterocyclic-phenoxymethyl)-phenoxy]-alkanoates
Inventors:
Gerard Crispino, Mark R. Diener
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Feb 22, 2000
Inventors
Gerard Crispino
Mark R. Diener
Assignee (at issue)
FMC CORPORATION
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.