Green molded product containing asbestos tailings suitable for firing
CA 1197268 A · Owner: Societe Nationale De L'Amiante · Inventors: Chevalier-Bultel, Jean-Pierre; Drolet, Jean-Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a green moulded product suitable for preparing shaped fired units comprising a) at least 55% to 99% by weight of non-calcined asbestos tailings, the remainder comprising b) at least one of (i) a heat decomposable metal salt selected from sodium, potassium, lithium, calcium, barium magnesium, aluminum and mixtures thereof in an amount of from 1% to 15% by weight, (ii) a natural aluminum silicate in an amount of from 1% to 30% by weight, and (iii) mixtures of (i) and (ii). The properties of fired units are such that they can be used as structural bricks medium, refractory bricks, firebricks, tiles and the like.
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 November 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2002.
- 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.