Punch, and rotary compression molding machine using the same
CA 2577919 C · Owner: Kikusui Seisakusho Ltd. · Inventors: Ozeki, Yuichi; Ikai, Fumiharu; Harada, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a punch comprising: a center punch and an outer punch surrounding the outer periphery of the center punch, both of which being slidable and capable of compressing; and relative position restriction means for restricting a relative position of the center and outer punches, the relative position restriction means being configured to restrict a first position in which a punch tip of the center punch is protruded from a punch tip of the outer punch and a second position in which the punch tip of the center punch is substantially coincident with the punch tip of the outer punch, and being configured to fail to restrict a third position in which the punch tip of …
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 August 24, 2005 and granted October 30, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.