Hydrolysis of halo- and alkyl-substituted phenols
CA 1309110 C · Owner: Liu, Ming-Biann · Inventors: Liu, Ming-Biann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydroxymethyl-dihalo-dialkylphenol is synthesized by contacting a halomethyl-dihalodialkylphenol with a substantial excess of water in a water-miscible organic solvent at a temperature of less than 55°C. The obtained product can be used to form epoxy resins useful as electrical components.
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 20, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 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
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.