Process for producing cement clinkers
CA 1081265 A · Owner: Portlandzementwerk Dotternhausen Rudolf Rohrbach Kommanditgesellschaft · Inventors: Rechmeier, Helmuth; Rohrbach, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing cement clinkers wherein, the raw particulate matter is fed to a heat exchanger heat, is supplied to the heat exchanger from an after-connected furnace and the raw particulate matter heated in the heat exchanger, the heated raw particulate matter is conveyed into the furnace and is there sintered with fuel feed, to, form cement clinkers. Waste fuels formed from organic waste such as motor oil vehicle tyres, are used as fuel.
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 July 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 1997.
- 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.