Polymer combinations useful in distillate hydrocarbon oils to improve cold flow properties
CA 1071866 A · Owner: Exxon Research And Engineering Company · Inventors: Wisotsky, Max J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Oil-soluble ethylene polymers or copolymers having a ?n greater than about 4000 in combination with an oil-soluble polyester material such as a homopolymer or copolymer, comprising at least 10% by weight C4 to C16 substantially straight-chain alkyl esters of acrylic or methacrylic acid, are useful in improving the cold flow properties of distillate hydrocarbon oils.
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 February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 1997.
- 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.