Immortalized human cell lines containing exogenous cytochrome p450 genes
CA 2118043 C · Owner: Gelboin, Harry V. · Inventors: Gelboin, Harry V.; Pfeifer, Andrea M. A.; Gonzalez, Frank J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Non-tumorigenic, human bronchial epithelial cell lines are provided wherein the cell lines are capable of expressing cytochrome P450 genes which have been inserted into the cell lines. Also provided are methods and kits for identifying potential mutagens, cytotoxins, carcinogens, and chemotherapeutic agents utilizing these cell lines.
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 9, 1993 and granted April 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2015.
- 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.