Demolition-facilitating substance
CA 1163278 A · Owner: Sumitomo Cement Co. Ltd. · Inventors: Sato, Kunio; Sato, Masao; Ichimura, Masaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
A novel demolision-facilitating substance comprises a clinker containing 1.0 ? 40% by weight of a calcium-alminoferrite solid solution and 60.0 ? 99.0% by weight of both free line and free magnesia, and optionally a reaction, moderator consisting of least one member selected from the group consisting of gypsum, sugars, polyhydric alcohols and borate.
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.
Why it's free to use
- Granted March 6, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 2001.
- 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.