Process for making a non-polar polymeric material dyeable with an acid dye
CA 1298808 C · Owner: Wertheimer, Michael Robert · Inventors: Cop, Leopold; Wertheimer, Michael Robert; Schreiber, Henry Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for making a surface of a non-polar polymeric material dyeable with an acid dye which comprises the treatment of said surface with a low temperature microwave plasma from a chemical compound which is capable of creating receptor sites for acid dye on said surface. There is also disclosed non-polar polymeric material which has been made dyeable with an acid dye using the above process, a process for dyeing non polymeric material with an acid dye and non-polar polymeric material which has been dyed using the latter process.
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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 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 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.
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.