Microwave transistor package
CA 1232083 A · Owner: Raytheon Company · Inventors: Laighton, David G.; Borkowski, Michael T.; Altschul, Barry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microwave transistor package is provided having a thermal and electrical conductive refractory type substrate. A ground plane plate is provided such plate having an open-, ended compartment therein the open end of such compartment, being disposed adjacent an upper surface portion of the ground plane plate. A bottom surface of such plate is disposed on an upper, inner surface region of the substrate. The thermal coefficient of expansion of the ground plane plate is substantially greater than the thermal coefficient of expansion of the substrate. An electrical insulator is disposed within the compartment, such insulator having a relatively high thermal transfer characteristic and having …
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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 January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
- 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.