A polyester resin composition, a cured resin, and a paint
CA 2283907 A1 · Owner: Murata, Shigeru · Inventors: Murata, Shigeru; Yamauchi, Toshio; Fujitani, Ryoichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A resin composition comprising a polyester resin having structural units represented by general formula (I) in the molecule wherein R1 and R2 are the , same or different and each represents hydrogen or lower alkyl provided that , not both of R1 and R2 are hydrogen at the same time and an amino resin; a , cured resin obtained by curing the resin composition; and a coating material containing the resin composition. The resin composition is suitable for use in coating materials, etc. because it gives a cured object excellent in water alkali, and cissing resistances.
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
- Filed March 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2020.
- 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.