Liquid sampling valve
CA 1279775 C · Owner: Coulter International Corp. · Inventors: Doty, Edward Neal; Berra, Humberto Antonio; Cabrera, Pedro Pablo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid diluting and transfer valve having disc like valve elements provided with faces frictionally engaged and further including passageways for passing both sample liquid and rinse liquid, a continuous groove formed in one of the respective faces for effectively isolating the passageway openings to said faces, said groove capable of blocking passage of leakage material along the face to the periphery of the engaged face.
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
- Granted February 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 5, 2008.
- 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.