Granted Patent
Utility
US 4,059,550 · App. 05/703,030
Aqueous dispersions of polyhydroxy polyether resins and aminoplast resins
Inventor:
David A. Shimp
Patented Case
View Patent ↗
Granted: Nov 22, 1977
Filed: Jul 6, 1976
Inventor
David A. Shimp
Assignee (at issue)
Celanese Polymer Specialties 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.