Chlorosulfonated polyethylene blends
CA 1279136 C · Owner: E. I. Du Pont De Nemours And Company · Inventors: Chen, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Chlorosulfonated Polyethylene Blends ABSTRACT OF THE DISCLOSURE, It has been found that if two different chlorosulfonated polyethylenes, each with its own specific selected chlorine and sulfur content range are blended with polyvinyl chloride, the resulting three-phase blend has good oil resistance and low temperature toughness.
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
- Granted January 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 2008.
- 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.