Frame of eyeglasses
CA 1292847 C · Owner: Yugen Kaisha Tokumaru Kogyo · Inventors: Tokumaru, Kaoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The frame of eyeglasses is produced by injection molding of a synthetic resin whose principle material is a polyarylate resin a, decorative coating layer on part or over the entire portion of the surface of the frame of eyeglasses, and a coating film is heat-hardened together with the frame of eyeglasses at about 130 to 150°C.
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 December 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 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.