Granted Patent
Utility
US 5,334,648 · App. 08/069,641
Emulsion polymers for use as a urea formaldehyde resin modifier
Inventors:
Stephen F. Drews, Leo August Tischer
Patented Case
View Patent ↗
Granted: Aug 2, 1994
Filed: May 28, 1993
Inventors
Stephen F. Drews
Leo August Tischer
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.