Granted Patent
Utility
US 4,454,083 · App. 06/332,385
Continuous microencapsulation
Inventors:
Robert W. Brown, Lester A. Balster
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Dec 21, 1981
Inventors
Robert W. Brown
Lester A. Balster
Assignee (at issue)
Appleton Papers 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.