Granted Patent
Utility
US 4,599,807 · App. 06/658,625
Process for drying polymeric beads and associating shading pigments therewith
Inventors:
Laura M. Wells, Fred D. Hawker, Maryam L. Dachniwskyj, Charles W. Strobel
Patented Case
View Patent ↗
Granted: Jul 15, 1986
Filed: Oct 9, 1984
Inventors
Laura M. Wells
Fred D. Hawker
Maryam L. Dachniwskyj
Charles W. Strobel
Assignee (at issue)
DeSoto, 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.