Electrical circuits
CA 1193752 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Ransom, Christopher J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hybrid or printed circuit is formed on a substrate (1) which comprises an iron-chromium-aluminum alloy which may also contain Yttrium and which forms a stable inert strongly adhering ceramic layer (5,6) on its exposed surfaces when heated in an oxidising atmosphere. To produce a hybrid circuit a dielectric paste is printed on the ceramic surface (5) of the alloy to form a platform (9). Conductors (9,10) are then printed on the dielectric platform (9) and fired. One or more component(s) (S) is/are then soldered to the conductors. Figure 2.
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 September 17, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2002.
- 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.