Granted Patent
Utility
US 5,445,758 · App. 08/255,217
Copolymers of ethylenically unsaturated and polyethylene-glycol monomethacrylate monomeric repeat units useful as scale control agents in boiler systems
Inventors:
Fu Chen, Keith A. Bair, Scott M. Boyette
Patented Case
View Patent ↗
Granted: Aug 29, 1995
Filed: Jun 7, 1994
Inventors
Fu Chen
Keith A. Bair
Scott M. Boyette
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.