Granted Patent
Utility
US 5,773,633 · App. 08/509,890
Process for crystallizing chroman-I from an impure mixture
Inventor:
Gaylord M. Kissinger
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Aug 1, 1995
Inventor
Gaylord M. Kissinger
Assignee (at issue)
General Electric 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.