Interfacial condensation of bioactive compounds and the site-specific compounds and conjugates thereof
CA 2067210 A1 · Owner: Research Corporation Technologies, Inc. · Inventors: Wrasidlo, Wolfgang J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a method of preparing conjugates of bioactive compounds and site-specific compounds in which covalent bonding between the compounds is effected by interfacial condensation while protecting the active binding sites from the condensation reaction. This provides very high yields of the bioactive site-specific conjugate, the products are homogeneous and it provides novel conjugate products. It is of particular advantage for monoclonal antibodies conjugated with cytotoxic agents.
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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 October 2, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 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.