Patent JPS5247345A successfully refreshed from Google Patents.
US2897584A
Expired / Lapsed
US
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Gold plated electrical contact and similar elements
Assignee: Sel Rex Corp
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Filing: 1957-05-22
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Granted: 1959-08-04
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Expires: 1977-05-22
Abstract
No abstract record available.
Inventors
- 👤 Schumpelt Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:15
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/018; C; C23; C23C; C23C28/00; C23C28/02; C23C28/023; H; H01; H01H; H01H1/00; H01H1/02; H01R; H01R13/00; H01R13/02; H01R13/03; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12875; Y10T428/12889; Y10T428/12896
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AS AN ARTICLE OF MANUFACTURE WHICH IS RESISTANT TO CORROSION AND TO TARNISHING BY DIFFUSION, A BASIS METAL, A LAYER OF SILVER DEPOSITED ON SAID BASIS METAL, A LAYER OF GOLD ABOUT .00001" TO .00002" THICK ON THE OUTSIDE SURFACE THEREOF AND A LAYER OF ABOUT .0000025" TO .000005" IN THICKNESS OF A BARRIER METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM, RUTHENIUM, RHODIUM AND PALLADIUM BETWEEN THE SILVER LAYER AND THE GOLD LAYER, SAID BARRIER METAL LAYER BEING BONDED TO SAID SILVER AT ONE SIDE AND TO THE GOLD LAYER AT THE OTHER SIDE THEREOF.
Claim 2
Dependent Claim
96 words
AS AN ARTICLE OF MANUFACTURE WHICH IS RESISTANT TO CORROSION AND TO TARNISHING BY DIFFUSION, A BASIS METAL, A LAYER OF SILVER DEPOSITED ON SAID BASIS METAL, A LAYER OF GOLD ABOUT .00001" TO .00002" THICK ON THE OUTSIDE SURFACE THEREOF AND A LAYER OF ABOUT .0000025" TO .000005" IN THICKNESS OF A BARRIER METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM, RUTHENIUM, RHODIUM AND PALLADIUM BETWEEN THE SILVER LAYER AND THE GOLD LAYER, SAID BARRIER METAL LAYER BEING BONDED TO SAID SILVER AT ONE SIDE AND TO THE GOLD LAYER AT THE OTHER SIDE THEREOF.
References Cited (Backward Citations)
US1738828A
Cited
US2539096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |