Stable solutions of poly-alphahydroxyacrylic acid salts
CA 1332670 C · Owner: Canela, Jose · Inventors: Amati, Werner; Canela, Jose
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, The invention relates to the stabilization of alkaline solutions of peroxide bleaching compounds using as stabilizing, agent, a water-soluble poly-.alpha.-hydroxyacrylic acid salt which in the sodium salt form has an average molecular weight Mw from 2000 to 10,000 and to the preparation of such a salt.
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 October 25, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 25, 2011.
- 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.