Liquid storage container with bottom filter
CA 2551675 C · Owner: Miyoshi, Naohito · Inventors: Miyoshi, Naohito; Yamada, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid storage container (eyedrops container) A comprises a container body 10 having a liquid storage portion 12 for containing medical liquid therein, and an instilling portion 61a for allowing the medical liquid to flow out in an opened state. An aerating device 100 having a filter element 101 and a check valve 103 for allowing ambient air to flow in from outside and preventing the liquid from flowing out to the outside is installed at the bottom of the container body 10. Further a cap B having an opening , member 9 and a valve member 11 is mountable on the container body 10.
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 December 24, 2004 and granted January 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2024.
- 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.