Solder ring for production of vacuum tube and method for the production of such a solder ring; and of a vacuum tube
CA 2471358 C · Owner: Eaton Electric N.V. · Inventors: Hilderink, Johannes Hermannus Laurentius Antonius
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Solder ring (12) for joining two components (10 11) of a vacuum tube, the , solder ring (12) comprising a joining part that consists of solder material for forming an airtight joint between the two components. The solder ring (12) further comprises at least one centring part. The centring part has at least one first projection (14, 15) that extends on one side of the joining part essentially in an axial direction of the solder ring (12) and at least one second projection (13, 16) that extends in an opposing direction for centring the two components (10, 11) with respect to one another.
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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
- Filed December 23, 2002 and granted October 2, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2024.
- 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
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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.