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Expired Canadian patentCanada

Ethylene polymers having a linear structure and method for preparing

CA 1203949 A · Owner: Enoxy Chimica S.P.A. · Inventors: Balducci, Agostino; Magni, Ambrogio; Corbellini, Margherita

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Abstract From the Canadian patent

Ethylene polymers having a linear structure and method for preparing", Abstract of the disclosure Particular ethylene polymers are described having a linear structure, that is a structure which is essentially devoid of lengthy branching offs and having a density less than 0.9450 g/cm.3. They are crystalline ethylene copolymers with at least another alpha olefin having a density comprised between 0.9150 and 0.9450 g/cm3 in which the con-, tents of comonomer varies from 1 molar % to 7 molar %. Such copolymers are further characterized by a melting point comprised between 115°C and 130°C and an X-ray crystallinity variable between 39% and 55% as a function of the quantity of comonomer, and a …

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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

  • Granted April 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 29, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 8, 1983
GrantedApril 29, 1986
Term endedApril 29, 2003
Patent numberCA 1203949 A
Classification (IPC)C08F210/02 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedFeb 8, 1983Patent grantedApril 29, 1986Term endedApril 29, 2003

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.