Patent Yard Sign in
Expired Canadian patentCanada

Polymer composition

CA 1339967 C · Owner: Dupont Mitsui Polychemicals Co. Ltd. · Inventors: Kawamoto, Manabu

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Provided herein a polymer composition which comprises from 50 to 85 parts by weight of an ethylene-type ionomer resin (A), from 10 to 39 parts by weight of a partially crosslinked olefin-type thermoplastic elastomer (B) and from 1 to 15 parts by weight of an ethylene/alpha-olefin copolymer rubber (C). The proposed composition is excellent in scratch resistance, adhesion to metals resistance to, heat deformation, flexibility antibleeding property of, mineral oil softener contained and low surface gloss.

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 July 21, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 26, 1989
GrantedJuly 21, 1998
Term endedJuly 21, 2015
Patent numberCA 1339967 C
Classification (IPC)C08L23/08

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedMay 26, 1989Patent grantedJuly 21, 1998Term endedJuly 21, 2015

Sources & verification

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