Foaming method and apparatus therefor
CA 2597357 C · Owner: Kamiyama, Motoya · Inventors: Kamiyama, Motoya; Yamashita, Kiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a small and inexpensive gas mixing/supplying device for introducing a gas into a high-viscosity material, by use of which a high-viscosity material can be directly supplied from a container such as a cartridge. The present invention comprises: a step of effecting a first suction stroke in which the piston 25 is moved in the cylinder 27 so as to generate a suction condition in the cylinder 27;, a step of supplying a high-viscosity material to the cylinder, using a suction force in the cylinder generated in said first suction stroke;, a step of stopping the piston after said first suction stroke;, a step of effecting a second suction stroke in which …
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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 14, 2006 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2026.
- 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.