Granted Patent
Utility
US 6,458,346 · App. 09/700,647
Broad spectrum microbicidal and spermicidal compositions, devices, and methods
Inventors:
Mary K. Howett, John W. Krieder
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: May 14, 2001
Inventors
Mary K. Howett
John W. Krieder
Assignee (at issue)
THE PENNSYLVANIA STATE UNIVERSITY
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.