Conjugated moieties for chelating paramagnetic metals
CA 2090033 C · Owner: Sintetica S.A. · Inventors: Palacios, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In this method, one attaches one or more chelatant molecules to a mono- or polyamino intermediate compound which is temporarily immobilized on a solid phase by a splittable bond. Thereafter, the bond is split to release the desired conjugate moiety, whereby a reactive site is generated at the splitting site. The conjugate can be coupled to a protein homing factor using that reactive site; the latter being single per chelatant molecule undesirable cross-linking during conjugation is substantially avoided.
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 July 10, 1992 and granted May 16, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2014.
- 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.