Granted Patent
Utility
US 4,889,928 · App. 07/322,695
Sucrose alkyl 4,6-orthoacylates
Inventor:
Philip J. Simpson
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Mar 13, 1989
Inventor
Philip J. Simpson
Assignee (at issue)
Tate & Lyle Public Limited 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.