Granted Patent
Utility
US 5,871,765 · App. 08/802,775
Non-aqueous controlled release pest and air care gel composition
Inventors:
Richard L. Johnson, David Scott Morrison
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Feb 21, 1997
Inventors
Richard L. Johnson
David Scott Morrison
Assignee (at issue)
Pennzoil Products 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.