Electrical circuit configuration arranged in a casing
CA 2240751 A1 · Owner: Buchali, Fred · Inventors: Buchali, Fred; Ferling, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To protect the HF circuits arranged in a casing and which are operated at frequencies of > 1 GHZ to 100 GHz against inner electromagnetic perturbing radiation, the complete circuit (1) is equipped on both sides with a large area layer (3 4) which, absorbs electrical fluctuations. The layer (4) made from a material which absorbs electrical fluctuations, such as silicon with average conductivity is arranged, below the circuit carrier (1). The circuit carrier (1) with the components (5) is encapsulated by a dielectric material such as silicon sealing compound or epoxy resin. The layer (3) made from a sealing compound which absorbs electrical fluctuations, such as silicon filled with iron …
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
- Filed July 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2020.
- 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.