Granted Patent
Utility
US 6,276,300 · App. 09/461,785
Animal litter
Inventors:
Ronald A. Lewis, Phillip Richard Green, Charmaine C. Bebiak, Cyndy Bolte
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: Dec 15, 1999
Inventors
Ronald A. Lewis
Phillip Richard Green
Charmaine C. Bebiak
Cyndy Bolte
Assignee (at issue)
Ralston Purina 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.