Systems and methods for simultaneously removing free and entrained contaminants in fluid like blood using photoactive therapy and cellular separation techniques
CA 2074830 C · Owner: Bischof, Daniel F. · Inventors: Bischof, Daniel F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Systems and methods for removing a contaminant from a fluid like blood, regardless of whether the contaminant is carried free within the fluid or entrained within cellular matter carried within the fluid. The systems and methods rely upon photodynamic processes to remove free contaminants from the fluid. The systems and methods rely upon separation processes to remove the cellular matter and, with it, the contaminants it entrains from the fluid. The system (10) includes a treatment device (12) that receives the fluid from a source container (14) and conveys the fluid after treatment to a collection container (16). Treatment device (12) includes housing (18) that encloses an interior chamber …
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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 December 20, 1991 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2013.
- 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.