Homogeneous copolymerization of non-polar monomers with ionic amphiphilic monomers
CA 1304874 C · Owner: Evani, Syamalarao · Inventors: Evani, Syamalarao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ionic copolymers exhibiting uniform gel-free, solution viscosity and a controllable melt viscosity and hot melt tension are prepared by copolymerizing in an oil phase a nonionic monomer (such as styrene or an alkylacrylate) with an ionic monomer (such as zinc dodecyl maleate or didodecyldimethylammonium p-styrene sulfonate). 32,656-F
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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 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.