A system, method and device for controllably releasing a product
CA 2241076 A1 · Owner: Ripley, Jerry · Inventors: Chen, Chi; Qin, Chuan; Ripley, Jerry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device, a system and a method are provided for controllably releasing a product (26) into a container (10) in which the product (26) is mixed with another product contained within an interior (14) of the container (10). The device (12) releases the product (26) due to variations in temperature or pressure that the system experiences during an autoclaving or sterilization procedure, for example. Materials and shapes of the members (20 20a, 20b, 22) , of the device (12) are selected such that the members (20 20a, 20b, 22) react , or otherwise move within the device in a predetermined manner in response to changes in temperature or pressure. As a result products (26) within the , …
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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 October 28, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2019.
- 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.