Preparation of ligand-polymer conjugate having a controlled number of introduced ligands
CA 1305809 C · Owner: Yip, Kin Fai · Inventors: Lewis, Lynette A.; Yip, Kin Fai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for chemically coupling a controllable number of ligands, e.g. haptens, to a polymeric material by derivatization of the polymer with an activating agent to introduce a couplable functional group. The derivatization is performed in the presence of a blocking agent which is reactive with the same functionality on the polymer as the activating agent. By reacting the polymer with a mixture of a predetermined ratio of excess amounts of the activating and blocking agents a, controllable number of couplable functional groups are introduced to the polymer for subsequent linkage to the desired ligand. The resulting polymer-ligand conjugates are useful as reagents in immunoassays, …
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
- Granted July 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 2009.
- 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.