Waste debarker
CA 2196015 C · Owner: Brunette Industries Ltd. · Inventors: Stroulger, Neal P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A waste debarker 10 comprises a housing 12 in which is mounted a rotatable first cutting drum 14 and a rotatable second cutting drum 16 arranged in a longitudinally spaced relationship with respect to the first drum 14. The first drum 14 has a plurality of circumferentially extending flanges 24 spaced along the length thereof for supporting cutting teeth 26 thereon. The second drum 16 has a plurality of discrete lugs 34 arranged on its surface for supporting cutting teeth 26 thereon. The lugs 34 are offset with respect to the flanges 24 on the first drum 14 and extend in between the flanges 24 as the drums 14,16 are rotated. The second drum 16 is located at a higher elevation than the first …
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 January 27, 1997 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2019.
- 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.