Self-closing liquid dispensing package
CA 2175334 C · Owner: Asahi, Harumine · Inventors: Chan, John Geoffrey; Asahi, Harumine; Biard, Daniel Guy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present, invention relates to, a self-closing liquid dispensing package, comprising a liquid container (10) and, a self-closing flat channel valve (20) In, liquid communication with liquid container, wherein the liquid container comprises a, reservoir portion (13) for containing liquid. The reservoir portion is made of a thermoformed, thermoplastic material. In one prefered embodiment, of the present invention. the self-closing flat channel valve (20), comprises a first sheet member and a second, sheet member (21, 22) wherein the sheets are, substantially planar are indexed face-to-face, and are sealed together along their longitudinal edges wherein the sheet members are, sufficiently …
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 26, 1994 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2016.
- 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.