Granted Patent
Utility
US 5,075,291 · App. 07/441,131
Crystalline sugar alcohol containing uniformly dispersed particulate pharmaceutical compound
Inventor:
James W. DuRoss
Patented Case
View Patent ↗
Granted: Dec 24, 1991
Filed: Nov 22, 1989
Inventor
James W. DuRoss
Assignee (at issue)
ICI Americas, Inc.
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.