Conveyer lubricant compatible with synthetic plastic containers
CA 2097429 C · Owner: Gutzmann, Timothy A. · Inventors: Gutzmann, Timothy A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Concentrated liquid and solid lubricating compositions having superior compatibility with synthetic polymeric packaging materials, such as polyethylene terephthalate (PET) linear high density , polyethylene (LHDPE) polystyrene, poly-, meric coated papers and the like, can include 1 to 50 wt% of a fatty acid diamine salt having the formula, ((R1)(R2)N(R5)NH(R3)(R4)+(R6COO)- or (R1)(R2)NH(R5)NH(R3)(R4)++(R6COO)2- wherein R1 is a C10-18 aliphatic, group; R2 R3, and R4 are independently hydrogen or an alkoxy group containing one to five alkylene oxide units; R5 is a C1-5 alkylene group; and R6 is a C10-18 aliphatic group. The lubricating compositions are particularly useful on the load …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 25, 1991 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.