Gradient system
CA 1300718 C · Owner: Isco, Inc. · Inventors: Allington, Robert W.; Jameson, Daniel G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To supply a programmed gradient to a highpressure pump for introduction into a column a, mixer, degasser and accumulator communicates with the high-pressure pump to supply fluid thereto having a volume no more than 150 times the chamber volume of the high-pressure pump. The mixer degasser and accumulator includes temperature sensors which sense when the mixer, degasser and accumulator has been emptied to a level where it cannot respond to a demand for fluid from said highpressure pump and provides a signal to a lowpressure pump which responds by cycling to again fill the mixer, degasser and accumulator. Upon receiving a demand signal, the low-pressure pump fills by drawing fluid from a …
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 May 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 2009.
- 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.