Functionalized multisequenced macromonomers and their production method
CA 2076027 C · Owner: Fayt, Roger · Inventors: Jacobs, Christian; Fayt, Roger; Varshney, Sunil K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A functionalized multisequenced macromonomer of formula (I) or formula (II) wherein each of blocks A, B and C represents a sequence of a monomer selected from the classes of acrylic vinylaromatic, methacrylic, diene-containing vinylpyridine, vinylpyrrolidone, alkylene oxide lactam, lactone and maleimide monomers with the proviso that either one or both of blocks A and C is selected from a class different from B and that at least one of blocks A, B or C is a (meth)acrylic sequence; m n, and p are integers representing the number of monomer structural units in the sequence in question e.g.: 3 Í n Í 1000, 0 Í m Í 1000 and 0 Í p Í 1000 with the proviso that m and p are both 0 at the same time; …
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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 February 12, 1991 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2013.
- 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.