Electric-electronic device including polyimide thin film
CA 1256592 A · Owner: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha · Inventors: Uekita, Masakazu; Awaji, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electric-electronic device including a polyimide thin film is disclosed, said polyimide thin film having a thickness of not more than 1000 A and a dielectric breakdown strength of not less than 1 x 106 V/cm and an electric-electronic device comprising a polyimide thin film and the group III-V or II-VI compound semconductor is also disclosed. The device has excellent properties ascribed to high heat resistance mechanical, strength, chemical resistance and insulating properties of the polyimide thin film.
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 June 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 27, 2006.
- 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.