Granted Patent
Utility
US 6,607,717 · App. 10/001,753
Silicon based quaternary ammonium functional compositions and their applications
Inventors:
Bethany K. Johnson, John Joseph Kennan, Feifei Lin
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Oct 24, 2001
Inventors
Bethany K. Johnson
John Joseph Kennan
Feifei Lin
Assignee (at issue)
Dow Corning Corporation
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.