Granted Patent
Utility
US 6,444,626 · App. 09/486,624
Poly(neopentyl polyol) ester based coolants and improved additive package
Inventors:
Michael A. McHenry, Dale Carr, Thomas Schaefer
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: May 8, 2000
Inventors
Michael A. McHenry
Dale Carr
Thomas Schaefer
Assignee (at issue)
Hatco Corporation
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.