US4604328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ductile brazing alloy containing reactive metals and precious metals
Assignee: Osram Sylvania Inc
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Filing: 1984-11-16
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Granted: 1986-08-05
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Expires: 2004-11-16
Abstract
Abstract Reactive metal-precious metal ductile alloys containing controlled amounts of Cu and Ni and mixtures thereof are suitable for brazing ceramics, other non-metallic and metallic materials.
Inventors
- 👤 Howard Mizuhara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:49
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3013; B23K35/302; B23K35/32; B23K35/322; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
An article consisting essentially of a ductile brazing alloy foil having a liquidus temperature of from about 890° C. to about 1400° C., said alloy having a composition consisting essentially of from about 0.25% by weight to about 5% by weight titanium, from about 25% by weight to about 85% by weight of a gold palladium mixture wherein the gold is from about 28% by weight to about 81% by weight and palladium is from about 8% by weight to about 58% by weight of said alloy, from about 3% by weight to about 40% by weight of nickel, from about 20% by weight to about 61% by weight of copper, from 0 to about 40% by weight of molybdenum and from about 0 to about 30% by weight of chromium.
Claim 2
Dependent Claim
131 words
An article consisting essentially of a ductile brazing alloy foil having a liquidus temperature of from about 890° C. to about 1400° C., said alloy having a composition consisting essentially of from about 0.25% by weight to about 5% by weight titanium, from about 25% by weight to about 85% by weight of a gold palladium mixture wherein the gold is from about 28% by weight to about 81% by weight and palladium is from about 8% by weight to about 58% by weight of said alloy, from about 3% by weight to about 40% by weight of nickel, from about 20% by weight to about 61% by weight of copper, from 0 to about 40% by weight of molybdenum and from about 0 to about 30% by weight of chromium.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |