Vacuum-tight assembly
CA 1165377 A · Owner: Gte Laboratories Incorporated · Inventors: Buhrer, Carl F.; Feuersanger, Alfred E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
23,127, ABSTRACT OF THE DISCLOSURE, A vacuum-tight assembly such as a discharge tube, for a sodium vapor arc lamp includes a high density poly-, crystalline ceramic body such as alumina or yttria, having a cavity at least one closure member, and a sealing material. The closure member is formed from a molybdenum-titanium alloy containing a small amount of nickel cobalt, or copper. The nickel, cobalt, or copper forms a relatively low melting eutectic with titanium thereby, facilitating fabrication of closure members by sintering. The closure member and the sealing material have thermal coefficients of expansion closely matched to the thermal coefficient of expansion of the ceramic body over a …
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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 April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
- 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.