Granted Patent
Utility
US 4,799,995 · App. 07/079,307
Scale inhibition formulations for kraft digesters
Inventors:
Druce K. Crump, Lance A. Cooper, Thomas M. Hopkins, II
Patented Case
View Patent ↗
Granted: Jan 24, 1989
Filed: Jul 29, 1987
Inventors
Druce K. Crump
Lance A. Cooper
Thomas M. Hopkins, II
Assignee (at issue)
THE DOW CHEMICAL 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.