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Expired Canadian patentCanada

Method of making a gasket or seal

CA 1295462 C · Owner: Walker, Robin Anthony · Inventors: Walker, Robin Anthony

CIPO record

Overview

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

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Abstract From the Canadian patent

A Method of Making a Seal, A method of manufacturing a seal which involves printing a seal material on a substrate which comprises;, - printing a first layer of seal material onto the substrate, with a stencil, - printing on a subsequent layer of seal material onto the substrate with a further stencil and, - curing or partially curing the seal material The or each further stencil has a recess pattern formed therein which accommodates the previously printed seal material on the substrate. Apparatus for use with the method and seals made in accordance therewith are also described. Any seal made in accordance with the invention may be provided with an electrically conductive mechanical stop.

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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 February 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
  • 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 31, 1987
GrantedFebruary 11, 1992
Term endedFebruary 11, 2009
Patent numberCA 1295462 C
Classification (IPC)B41M1/12 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMarch 31, 1987Patent grantedFeb 11, 1992Term endedFeb 11, 2009

Sources & verification

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