Granted Patent
Utility
US 5,395,871 · App. 08/239,096
Process of making a stable solution of poly(hydroxystyrene) functionalized with t-butyloxycarbonyl groups
Inventor:
Dinesh N. Khanna
Patented Case
View Patent ↗
Granted: Mar 7, 1995
Filed: May 6, 1994
Inventor
Dinesh N. Khanna
Assignee (at issue)
Hoechst Celanese 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.