Riddling devices of urban solid garbage
CA 2000813 C · Owner: Impresa A. Cecchini & C. S.R.L. · Inventors: Cerroni, Manlio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improvements of riddling devices of urban solid waste where outside the riddling cylinder, a few reeds both continuous and, discontinuous, are applied overhanging with respect to the same, riddling cylinder and of such a height which is proportional to the dimensions of the holes, with the reeds having preferably, a longitudinal orientation and being they furthermore, orthogonal, with respect to the external surface of the cylinder or being they slightly inclined with respect to the radial direction in a direction opposite to the direction of rotation of the riddling cylinder.
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 October 16, 1989 and granted August 29, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2011.
- 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.