A molding material and a molded article
CA 2399736 A1 · Owner: Kajita, Takehiko · Inventors: Ogawa, Masanori; Itou, Kuninori; Kajita, Takehiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A phenolic resin composition in which the phenolic resin can be smoothly cured at a low temperature while inhibiting the generation of free formaldehyde and trapping free phenol. An epoxy compound is dispersed or dissolved as a hardener in an aqueous phenolic resin solution. The epoxy compound functions not only as a hardener for the phenolic resin but as a trapping agent for free phenol. The phenolic resin has been sulfoalkylated and/or sulfaalkylated so as to have improved hydrophilicity.
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 February 5, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 5, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2023.
- 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.