Multi-functional unsaturated polyester polyols
CA 2417458 A1 · Owner: Ross, Jeff S. · Inventors: Tian, Dong; Ross, Jeff S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel multifunctional unsaturated polyester polyols UV-curable top coat, formulations including these polyols and a one-step process for preparing , these polyols are, disclosed. Surface coverings and surface covering components including these top coat, formulations are also disclosed. The polyols are generally formed by the ring opening, polymerization of a lactone with a compound of the formula (R1)aR(OH)b where , a + b > 2. R1 is a double bond-containing moiety such as allyl vinyl, vinylidene, vinyl , ether, acrylate and the like. R is generally an alkyl, aryl aralkyl, alkaryl, ether or ester , group including, substituted versions thereof. R can be a polymer including polymers with a …
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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 January 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2025.
- 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.