Process and apparatus for continuous surface treatment of small objects
CA 2066737 C · Owner: Gontero, Roger · Inventors: Serra, Claude; Gontero, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the continuous surface treatment of items of limited size for example, surface treatment of small fragile products characterized by the product to be treated and if necessary, the treatment product, being continuously fed into a rotating cylinder (1) lying horizontal or approximately horizontal which is rotated at low speed and in which is slowly rotating in the opposite direction, a spiral brush (10) aligned parallel to the said cylinder and which is placed in contact through at least one of its generators with at least one internal generator of the lower part of the latter. The invention also relates to a machine which allows this process to be implemented.
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 September 25, 1990 and granted February 3, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2012.
- 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.