Modified tcf
CA 2130561 A1 · Owner: Masunaga, Niroaki · Inventors: Goto, Masaaki; Murakami, Akihiko; Tsuda, Eisuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Modified TCF in which amino-acid residue(s) of the wild-type TCF responsible for glycosylation is (are) substituted or deleted so that at least one N-linked oligosaccharide chain is removed. The modified TCF have longer biological half-lives without loss of its biological activities. The modified TCFs are therapeutically important as agents for liver diseases or as anti-cancer drugs.
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 December 27, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 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.