Granted Patent
Utility
US 4,415,698 · App. 06/333,892
Method of preparing water-borne colloidal dispersions of vinyl resins
Inventor:
You-Ling Fan
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Dec 23, 1981
Inventor
You-Ling Fan
Assignee (at issue)
Union Carbide 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.