Primitive cell colony stimulating factors and lymphohematopoietic progenitor cells
CA 2000263 A1 · Owner: Attah-Poku, Samuel K. · Inventors: Heise-Qualtiere, Janette; Ohmann, Helle B.; Lawman, Michael J.P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention derives from the discovery of cells, NA cells, which have properties indicating that they may be pluripotent lymphohematopoietic progenitor cells. These cells, and the stromal cells derived from bone marrow cultures, produce factors which stimulate the growth of primitive cell colonies, as reflected in their stimulation of the growth of colonies of NA cells. These primitive cell colony stimulating factors (PC-CSFs) may be useful in the treatment of disorders which can be alleviated by the proliferation of desired cells. In addition the NA cells and/or PC-CSF(s) may provide an alternative and/or supplementary method to bone marrow transplantation to alleviate hematopoietic …
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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 October 6, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2011.
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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.