Granted Patent
Utility
US 5,948,567 · App. 09/005,952
Battery paste dispersant
Inventor:
David HELLER
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Jan 9, 1998
Inventor
David HELLER
Assignee (at issue)
GEO Specialty Chemicals, 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.