Release of hematopoietic stem cells from affinity matrices
CA 2014965 C · Owner: Johns Hopkins University · Inventors: Civin, Curt I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses a method for releasing animal cells bound to antibodies specific for the MY10 epitope which comprises treating the antibody bound animal cells with chymopapain and separating the viable cells from said antibodies. The invention also provides a method for the purification of lymphohematopoietic precursor cells from a population of human CD34-positive cells. Both of these methods are important for the positive selection of normal marrow stem cells for treatment of bone marrow grafts required for bone marrow transplantation in diseases such as aplastic anemia and leukaemia.
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
- Filed April 19, 1990 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2012.
- 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.