Refractory gun mix
CA 1204792 A · Owner: National Refractories & Minerals 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 low cost stabilized lime aggregate preferably, with dicalcium silicate as a major constituent is, obtained from slags of specified composition and finds use, in refractory gun mixes. Briefly the slags which are, suitable for this application contain at least 75% total CaO + Fe2O3 + SiO2 + MgO, have a CaO:SiO2 weight ratio of at least 1.8, less that 7% total calcium carbonate (CaCO3), calcium hydroxide (Ca(OH)2), and CaO and prefer-, ably contain at least 20% CaO.
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 May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 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
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.