Granted Patent
Utility
US 6,187,729 · App. 08/475,022
Cleaning composition comprising solvating agent and rinsing agent
Inventors:
Michael E. Hayes, Donald P. Hosman, Kevin R. Hrebenar, Robert D. Sell
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Jun 6, 1995
Inventors
Michael E. Hayes
Donald P. Hosman
Kevin R. Hrebenar
Robert D. Sell
Assignee (at issue)
Petroferm, 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.