Patent US2646616A successfully refreshed from Google Patents.
US2646616A
Expired / Lapsed
US
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Composite metal having precious metal surface and berylliumcopper base
Assignee: Metals and Controls Corp
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Filing: 1949-09-06
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Granted: 1953-07-28
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Expires: 1969-09-06
Abstract
No abstract record available.
Inventors
- 👤 Ermand H Davignon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:26
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/018; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12868; Y10T428/12903; Y10T428/1291; Y10T428/12944; Y10T428/12986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A COMPOSITE CORROSION-RESISTANT LAMINATED METAL COMPRISING A BERYLLIUM-COPPER BASE LAYER, AN ANTI-OXIDANT PROTECTIVE METAL LAYER BONDED TO SAID BASE LAYER, A SOLDER LAYER BONDED TO SAID PROTECTIVE LAYER, A BARRIER METAL LAYER BONDED TO SAID SOLDER LAYER, A NICKEL LAYER BONDED TO SAID BARRIER METAL LAYER, AND A PRECIOUS METAL LAYER BONDED TO SAID NICKEL LAYER, SAID SOLDER LAYER HAVING A MELTING POINT EXCEEDING THE SOLUTION ANNEALING TEMPERATURE OF BERYLLIUM-COPPER, THE BONDS BETWEEN ADJACENT LAYERS REMAINING INTACT AT THE SOLUTION ANNEALING TEMPERATURE OF BERYLLIUM-COPPER, SAID BARRIER METAL BEING A SUBSTANTIALLY NON-FERROUS ALLOY CONTAINING PREDOMINANTLY ONE OF THE GROUP CONSISTING OF NICKEL AND COPPER, SAID BARRIER METAL BEING SOLDER-DIFFUSIBLE AND OF SUFFICIENT STRENGTH TO WITHSTAND THE LAYER SEPARATING FORCES AT THE SOLUTION ANNEALING TEMPERATURE OF BERYLLIUM-COPPER.
Claim 2
Dependent Claim
125 words
A COMPOSITE CORROSION-RESISTANT LAMINATED METAL COMPRISING A BERYLLIUM-COPPER BASE LAYER, AN ANTI-OXIDANT PROTECTIVE METAL LAYER BONDED TO SAID BASE LAYER, A SOLDER LAYER BONDED TO SAID PROTECTIVE LAYER, A BARRIER METAL LAYER BONDED TO SAID SOLDER LAYER, A NICKEL LAYER BONDED TO SAID BARRIER METAL LAYER, AND A PRECIOUS METAL LAYER BONDED TO SAID NICKEL LAYER, SAID SOLDER LAYER HAVING A MELTING POINT EXCEEDING THE SOLUTION ANNEALING TEMPERATURE OF BERYLLIUM-COPPER, THE BONDS BETWEEN ADJACENT LAYERS REMAINING INTACT AT THE SOLUTION ANNEALING TEMPERATURE OF BERYLLIUM-COPPER, SAID BARRIER METAL BEING A SUBSTANTIALLY NON-FERROUS ALLOY CONTAINING PREDOMINANTLY ONE OF THE GROUP CONSISTING OF NICKEL AND COPPER, SAID BARRIER METAL BEING SOLDER-DIFFUSIBLE AND OF SUFFICIENT STRENGTH TO WITHSTAND THE LAYER SEPARATING FORCES AT THE SOLUTION ANNEALING TEMPERATURE OF BERYLLIUM-COPPER.
References Cited (Backward Citations)
US2474038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |