Granted Patent
Utility
US 4,554,344 · App. 06/722,583
Process for preparation of polyesters with improved molecular weight from glycols containing a vicinal secondary hydroxyl group
Inventors:
Winston J. Jackson, Jr., Joseph J. Watkins
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Apr 12, 1985
Inventors
Winston J. Jackson, Jr.
Joseph J. Watkins
Assignee (at issue)
EASTMAN KODAK 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.