Granted Patent
Utility
US 6,652,977 · App. 09/950,358
Primer composition
Inventor:
Jun Zhang
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Sep 10, 2001
Inventor
Jun Zhang
Assignee (at issue)
JohnsonDiversey, 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.