Granted Patent
Utility
US 5,541,257 · App. 08/407,174
Reactive rinse aid for processing plastic surfaces
Inventors:
Barry P. Gunagan, Jeffrey I. Melzer
Patented Case
View Patent ↗
Granted: Jul 30, 1996
Filed: Mar 21, 1995
Inventors
Barry P. Gunagan
Jeffrey I. Melzer
Assignee (at issue)
Betz Laboratories, 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.