Thin film metallization and brazing of aluminum nitride
CA 2134340 A1 · Owner: Tenhover, Michael A. · Inventors: Tenhover, Michael A.; Adlam, Edwin J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The aluminum nitride metallized structure (10) of the present invention includes a substrate (11) comprising an AlN sintered body and a metallized structure (21) formed on the substrate comprising a first layer (12) deposited on the sintered body and a second (B) layer deposited on the first layer (12). The first layer (12) comprises an alloy having the general formula (a) based on atomic percent: XxZ100-x wherein X is at least one member selected from the group consisting of Ti, Zr, Hf and the rare earth elements, Z is at least one member selected from the group consisting of Mo, W, Cr, Nb, V and Ta, and 10 < x < 60 atomic %. The second layer (13) comprises at least one member selected …
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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 May 12, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2015.
- 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.