Thermal development of color in a polyamide textile material with aminobenzenesulfonyl azides
CA 1201559 A · Owner: Armstrong World Industries, Inc. · Inventors: Hoyle, Charles E.; Lenox, Ronald S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, The present invention discloses a method of thermally developing color on a polyamide textile material. The material is first contacted with an aminobenzenesulfonyl azide and then is heated at a temperature ranging from 80°C to the melting point of the polyamide material for an amount of time sufficient to develop a color thereon.
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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 March 11, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 2003.
- 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
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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.