Granted Patent
Utility
US 4,435,524 · App. 06/442,701
Process for preparing spherical and porous vinyl resin particles
Inventor:
Kornelius Dinbergs
Patented Case
View Patent ↗
Granted: Mar 6, 1984
Filed: Nov 18, 1982
Inventor
Kornelius Dinbergs
Assignee (at issue)
B. F. Goodrich 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.