Valves and pumps for microfluidic systems and method for making microfluidic systems
CA 2431237 A1 · Owner: Choi, Insung S. · Inventors: Stone, Howard A.; Chiu, Daniel T.; Wargo, Christopher J.
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 microfluidic systems including valves (12) , and pumps for microfluidic systems. The valves of the invention include check valves (30) such as diaphragm valves and flap valves. Other valves of the invention include one-use valves (12). The pumps of the present invention include a reservoir (40) and at least two check valves (30 31). The reservoir , (40) may be a variable volume. The present invention also relates to a flexible microfluidic system (10). The present invention additionally relates to a method of making microfluidic systems (10) including those of the present invention. The method includes forming a microfluidic system on a master (100), …
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 January 8, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2024.
- 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.