Fixed volume liquid transfer device and method for transferring liquids
CA 2305899 A1 · Owner: Bayer Corporation · Inventors: Kuo, Hai-Hang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fixed volume liquid transfer device defined by a small bore tube having an open end for collection of liquids and a plunger in the tube is disclosed. A piston is mounted around the open end and an air plug is mounted in the piston adjacent the open end. Liquid in a test tube is transferred to a testing site by inserting the transfer device into the test tube. As the piston contacts the liquid the liquid is pumped into, the tube. As the transfer device is inserted further the air, plug is actuated to balance air pressure across the piston. The device may then be withdrawn from the test tube and transported to a test site. At the test site the plunger is , depressed to expel the liquid …
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 April 17, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 17, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2022.
- 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.