Granted Patent
Utility
US 6,806,240 · App. 10/049,452
Conveyor lubricant, passivation of a thermoplastic container to stress cracking, and thermoplastics stress crack inhibitor
Inventors:
Kimberly L. P. Hei, Minyu Li, Keith D. Lokkesmoe, Joy G. Herdt, Guang-Jong Jason Wei, Michael E. Besse
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Jun 14, 2002
Inventors
Kimberly L. P. Hei
Minyu Li
Keith D. Lokkesmoe
Joy G. Herdt
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.