Method of separating blood plasma, and apparatus therefor
CA 1267610 C · Owner: Terumo Kabushiki Kaisha Trading As Terumo Corporation · Inventors: Watanabe, Masaharu; Osawa, Takaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for the semicontinuous separation of plasma from blood collects blood from and returns blood to an individual in an intermittent manner. Blood introduced from say, a donor is fed into, membrane-type blood plasma separating means by a circulating mean so that plasma may be separated from the blood. Some of the concentrated blood that results is pooled in blood reservoir means, and the remaining concentrated blood is mixed with newly introduced blood and fed into the plasma separating means to repeat plasma separation and hence, concentration. When a predetermined amount of blood has been introduced from the donor, some of the blood remaining in the system is returned …
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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
- Granted April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
- 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.