Chromatography column and end plug assembly
CA 1262870 C · Owner: Bio-Rad Laboratories, Inc. · Inventors: Mceachern, Dan L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel column cartridge for a chromatography apparatus, particularly HPLC, is comprised of a hollow metal tube, open at both ends and having internal shoulders facing each open end, and a pair of end plugs each having a frusto-conical shape at its outer end. The end plugs are sealed into place by rolling the tube end to compress it against the frustum surface leaving a, short length of plug extending beyond the tube end for compression sealing against a conventional holder or mounting device. BBBBB4/2558-167
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 November 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 14, 2006.
- 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.