Ionic bond containing polymers
CA 1296123 C · Owner: Uekita, Masakazu · Inventors: Uekita, Masakazu; Awaji, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polymer has a linear recurring unit in which a first organic group (R1) having at least two carbon atoms and a valence of at least three and a second organic group (R2) having at least two carbon atoms and a valence of at least two are bonded together alternatively through a divalent connecting group, and containing at least one hydrocarbon group (R3) having 10 to 30 carbon atoms which is linked to the reccurring unit by an ionic bond and which may be substituted.
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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 February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 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.