Silicone polymer-internally coated webs
CA 1338232 C · Owner: Sili-Tex, Inc. · Inventors: Caldwell, James Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process is provided for treating a porous web (especially fabric) to produce a novel silicone polymer internally coated web. In the process a starting curable liquid silicone polymer is coated under pressure upon one surface of the web and the web, is then subjected to localized shear forces sufficient to move the silicone polymer composition into interior portions of the web and to distribute the silicone polymer composition generally uniformly therwithin in such planar region. Excess silicone polymer composition is wiped away from a web surface. Thereafter the, resulting web is heated or irradiated to cure the silicone polymer. Preferably a web is preliminarily impregnated …
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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 April 9, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.