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Expired Canadian patentCanada

Multi-layer fabric for paper-making

CA 1284082 C · Owner: Tate, Takuo · Inventors: Tate, Takuo

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

A multi-layer fabric for paper-making comprising at least two fabric layers A and B, each of which is formed by inter-weaving respective warps and wefts. An upper-most layer A is woven as a plain weave 1/1 except at binding points S1 S3, and is adapted to support a paper-web thereon. A lower layer B is positioned below the upper-most layer A and formed by, warps 3 and wefts 4, 4a each of which have larger diameters, than those of the upper-most layer A. The upper-most layer A and the lower-most layer B are bound by means of a part 1a of the warps 1 of the upper-most layer A being intermoven with a part 4a of the wefts 4 of the lower-most layer or by means of, separate binder threads 5 other …

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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 May 14, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 14, 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.
FiledNovember 30, 1987
GrantedMay 14, 1991
Term endedMay 14, 2008
Patent numberCA 1284082 C
Classification (IPC)D21F7/10 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedNov 30, 1987Patent grantedMay 14, 1991Term endedMay 14, 2008

Sources & verification

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