Culturing pancreatic stem cells having a specified, intermediate stage of development
CA 2415108 A1 · Owner: Zheng, Tianli · Inventors: Zheng, Tianli; Huang, Chang Jiang; Tsang, Wen-Ghih
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to the discovery that an intermediate differentiated , stage of pancreatic stem cells exist that can be propagated in a stable manner in successive serial passaging while maintaining insulin production in response to glucose. These cells are advantageous in that they are both expandable and stable in culture and can driven to late stage development i.e. prototype islet cells. This invention further provides for culturing techniques that select for these intermediate differentiated stage cells and selectively eliminates early or late stage pancreatic cells.
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 June 29, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2023.
- 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.