Multioperational treatment apparatus and method for drying and the like
CA 2007474 C · Owner: Kraft General Foods, Inc. · Inventors: Cole, Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and a method for drying or otherwise treating materials within a controlled environment are provided. Included is a combination of features that imparts a fluidized state to particulate materials on a foraminous conveyor belt, which features also permit selecting other modes of operation including downflow of treating gas to and through the foraminous conveyor belt and upflow of treating gas to and through the foraminous conveyor belt. By this arrangement, a sinqle apparatus can be used to accomplish a plurality of different treatments by selectively adjusting treatment variables,
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 10, 1990 and granted August 26, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 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.
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.