Sterile and pyrogen-free columns coupled to protein for binding and removal of substances from blood
CA 2190268 C · Owner: Barclay, Alan · Inventors: Bohm, Wolfgang; Spaethe, Reiner; Barclay, Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method for producing a sterile and pyrogen-free column coupled to protein for use in removing a predetermined substance from the blood of a human subject. The method abrogates sterilization of the finished protein-containing product by providing sterile and pyrogen-free raw materials at each production step. The method provides a pathogen-free purified solution of, protein which binds to a predetermined substance in human blood such as LDL or immunoglobulin. Typically the protein is anti-human, LDL immunoglobulin or anti-human Ig immunoglobulin. The method also provides a sterile and pyrogen-free column matrix material such as an agarose which is chemically …
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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 May 15, 1995 and granted January 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2017.
- 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
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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.