Patent Yard Sign in
Expired Canadian patentCanada

Papermachine clothing

CA 1313341 C · Owner: Green, Alan · Inventors: Riley, Brian; Green, Alan

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

The invention is concerned with a base fabric for use in the manufacture of a papermachine press-felt the base fabric, comprising a multi-layer endless woven fabric wherein the machine direction yarns of at least one fabric layer form interdigitated weft loops having a warp yarn therein, and thus define a seam and, wherein at least one further fabric layer exists. The further layer or layers may be continuous throughout the full longitudinal extent of the multilayer fabric, and are slit along the line of the seam after needling of a batt to the base fabric or may be broken and, the weft yarns woven tight about an extreme warp yarn.

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 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 28, 1988
GrantedFebruary 2, 1993
Term endedFebruary 2, 2010
Patent numberCA 1313341 C
Classification (IPC)B32B5/02 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMarch 28, 1988Patent grantedFeb 2, 1993Term endedFeb 2, 2010

Sources & verification

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