Hepatic parenchymal cell growth factor, gene encoding the same, process for producing the factor, and transformants producing the factor
CA 2022752 C · Owner: Tsubouchi, Hirohito · Inventors: Miyazawa, Keiji; Takahashi, Kazuhiro; Ishii, Takehisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the present invention, there are provided hepatic parenchymal cell growth factor obtained by recombinant DNA technology, a gene coding for the factor an, expression vector capable of expressing the gene a cell, in, particular animal cell, transformed with the expression vector, and a process for producing the hepatic parenchymal cell growth factor.
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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 August 7, 1990 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2012.
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Timeline
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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.