Dosing apparatus
CA 2442833 C · Owner: Pfister Gmbh · Inventors: Hafner, Hans Wilhelm
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The aim of the invention is to provide a dosing device for improved measuring accuracy during the continuous gravimetric dosing of bulk material in , particular combustibles in pulverulent form. To achieve this two dosing , rotors (3, 33) are arranged on the same axis one above the other, with , intermediate or discharge openings (7 37) being arranged in an offset manner.
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
- Filed February 8, 2002 and granted July 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2024.
- 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.