.alpha.-ALKYLACRYLAMIDE DERIVATIVES AND THEIR POLYMERS
CA 1290765 C · Owner: Tsuboniwa, Noriyuki · Inventors: Umemoto, Hirotoshi; Suzuki, Yuji; Tsuboniwa, Noriyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, A polymer comprising a carbon-carbon backbone chain and at least one N-(substituted oxalyl)carbamoyl group of the formula: -CO-NH-CO-CO-OR'wherein R'is a hydrocarbon group and at least one lower alkyl group attached to said chain, which is useful as a resin component in a coating, adhesive or molding composition.
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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.