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Expired Canadian patentCanada

Composites of grafted olefin polymers and cellulose fibers

CA 1159986 A · Owner: Monsanto Company · Inventors: Patel, Raman; Coran, Aubert Y.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Composites are disclosed of discontinuous cellulose fibers mixed with a methylol phenolic modified polyolefin and a bonding agent. Treated fibers are also disclosed which are treated to reduce fiber-to-fiber interaction so as to facilitate mixing into composites.

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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 January 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 12, 1981
GrantedJanuary 3, 1984
Term endedJanuary 3, 2001
Patent numberCA 1159986 A
Classification (IPC)C08L1/02 +2 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedJune 12, 1981Patent grantedJan 3, 1984Term endedJan 3, 2001

Sources & verification

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