Impregnating anodic oxide film with polymerizable compound and polymerizing and resulting wiring board
CA 1212073 A · Owner: Fujikura Cable Works, Ltd. · Inventors: Isawa, Kazuo; Usuki, Takayoshi; Murayama, Seizo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process of treating an anodic oxide film wherein a base material of a valve metal or magnesium or their alloys is anodized to form the anodic oxide film thereon, which is then impregnated with a polymerizable compound and thereafter subjected to polymerization of the compound, whereby the micropores of the anodic oxide film are fiIled and sealed with the polymerized compound. According to this process, there is provided a base material having an anodic oxide film impregnated with polymerized compound which is excellent in heat resistance, heat reflection and electrical insulation and, hence the base material is useful for the printed wiring board, electrically-insulative heat sink …
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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
- Granted September 30, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 2003.
- 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.