Granted Patent
Utility
US 6,299,677 · App. 09/202,937
Binders for cores and molds
Inventors:
Calvin K. Johnson, Kwok-tuen Tse, Leonid S. Zaretskiy, Brian Algar
Patented Case
View Patent ↗
Granted: Oct 9, 2001
Filed: Jun 25, 1999
Inventors
Calvin K. Johnson
Kwok-tuen Tse
Leonid S. Zaretskiy
Brian Algar
Assignee (at issue)
Borden Chemical, 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.