Waterborne polyolefin adhesion promoter
CA 2236987 C · Owner: Eastman Chemical Company · Inventors: Bellas, Michael; Sharma, Mahendra Kumar; Williams, Kevin Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is directed to a waterborne polyolefin composition which is useful as an adhesion promoter and is prepared by emulsifying non-oxidized non-maleated, non-chlorinated, crystalline polyolefins and non-chlorinated maleated, amorphous polyolefins in the presence of a surfactant an amine and , water.
Read the whole patent
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 30, 1996 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2018.
- 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.