Process for the production of ceramic substrates for thin layer circuits
CA 1050739 A · Owner: Siemens Aktiengesellschaft · Inventors: Niedermeier, Karl; Wintzer, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of ceramic substrates for thin layer circuits utilizes a cast compound which may be transformed-into a ceramic body by sintering. The compound is poured out in the form of a coating on a base, for drying whereupon a leather-like tough, "green", substrate layer is formed from which the required shapes can be punched out and sintered. In the green, air-drying state the substrates are, exposed to a pressure of up to approximately 1000 kp/cm2 between highly polished> plane parallel surfaces constituted by mirror finished surfaces of compression rams which may advantageously include highly polished surfaces of synthetic material.
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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 March 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 1996.
- 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.