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Expired Canadian patentCanada

Membrane anchor/active compound conjugate, its preparation and its use

CA 1340656 C · Owner: Metzger, Jorg · Inventors: Becker, Gerhard; Buhring, Hans-Jorg; Bessler, Wolfgang

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Abstract From the Canadian patent

A description is given of membrane anchor/active compound conjugates in which the active compound is covalently bonded to the membrane anchor which is a compound of the formulae, (see fig. I to VII), it being possible for A to be sulfur oxygen, disulfide, (-S-S-), methylene (-CH2-) or -NH-; n being 0 to 5; m being 1 or 2;, B can be each of the substituted s-alkyl radicals formulated in I to V;, C* being an asymmetric carbon atom with R or S configuration; R R' and R" being, identical or different and being an alkyl alkenyl or, alkynyl group having 7 to 25 carbon atoms or hydrogen which can optionally be substituted by hydroxyl amino, oxo, acyl, alkyl or cycloalkyl groups and R1 and R2 …

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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

  • Granted July 20, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 20, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 23, 1986
GrantedJuly 20, 1999
Term endedJuly 20, 2016
Patent numberCA 1340656 C
Classification (IPC)C07K7/06 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005200820112014Application filedJune 23, 1986Patent grantedJuly 20, 1999Term endedJuly 20, 2016

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.