Granted Patent
Utility
US 4,839,413 · App. 07/162,790
Resin-fortified emulsion polymers and methods of preparing the same
Inventors:
Richard A. Kiehlbauch, Sheng-Liang Tsaur
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Mar 2, 1988
Inventors
Richard A. Kiehlbauch
Sheng-Liang Tsaur
Assignee (at issue)
S. C. JOHNSON & SON, 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.