Granted Patent
Utility
US 5,064,561 · App. 07/520,887
Two-part clean-in-place system
Inventor:
Carol A. Rouillard
Patented Case
View Patent ↗
Granted: Nov 12, 1991
Filed: May 9, 1990
Inventor
Carol A. Rouillard
Assignee (at issue)
DIVERSEY, 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.