Granted Patent
Utility
US 5,438,151 · App. 08/194,457
Process for the preparation of ergothioneine
Inventors:
Jean-Claude Yadan, Jinzhu Xu
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Feb 8, 1994
Inventors
Jean-Claude Yadan
Jinzhu Xu
Assignee (at issue)
Bioxytech
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.