Method and apparatus for deagglomerating powder
CA 2089232 C · Owner: Herb, Paul C. · Inventors: Herb, Paul C.; Wellen, Thomas W.; Chilton, John B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for deagglomerating powder which allows for the powder to be pressed immediately after being deagglomerated. The deagglomerating apparatus is preferably mounted on the powder pressing machine or shares the same housing with the powder pressing machine so that deagglomerated powder may pass from the deagglomerating apparatus into the powder pressing machine.
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 10, 1993 and granted July 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 10, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 10, 2015.
- 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.