Granted Patent
Utility
US 6,673,753 · App. 09/840,365
Conveyor lubricant, passivation of a thermoplastic container to stress cracking and thermoplastic stress crack inhibitor
Inventors:
Kimberly L. Person Hei, Joy G. Herdt, Minyu Li, Keith D. Lokkesmoe, Guang-Jong Jason Wei, Michael E. Besse
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Apr 23, 2001
Inventors
Kimberly L. Person Hei
Joy G. Herdt
Minyu Li
Keith D. Lokkesmoe
Guang-Jong Jason Wei
Michael E. Besse
Assignee (at issue)
ECOLAB 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.