Refractory composition
CA 1098549 A · Owner: Kaiser Aluminum & Chemical Corporation · Inventors: Cassens, Nicholas, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refractory composition, suitable for ramming casting, or gunning, which can be heated rapidly without exploding is made from sized refractory aggregate bonded with from 0.1% to 3% MgSO4, from 0.1% to 2% sodium gluconate, and from 0.1 to 2% B2O3 in the form of a soluble boron compound, boric acid being a preferred form. To inhibit explosion of the composition upon rapid heating, the sum of the percent sodium gluconate and boric acid should be over 0.8, preferably over 0.9.
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 March 31, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 1998.
- 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.