Patent US2693555A successfully refreshed from Google Patents.
US2693555A
Expired / Lapsed
US
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Method and apparatus for welding germanium diodes
Assignee: Raytheon Co
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Filing: 1951-04-04
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Granted: 1954-11-02
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Expires: 1971-04-04
Abstract
No abstract record available.
Inventors
- 👤 Harper Q North
- 👤 Sanford H Barnes
- 👤 Jack F Roach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:46
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0438; H10P95/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
37 words
A GERMANIUM CRYSTAL DEVICE COMPRISING A GERMANIUM CRYSTAL, FIRST AND SECOND WIRE ELECTRODES, A RECTIFYING CONTACT BETWEEN SAID CRYSTAL AND SAID FIRST WIRE ELECTRODE, AND A SUBSTANTIALLY NON-RECTIFYING WELDED CONNECTION BETWEEN SAID CRYSTAL AND SAID SECOND ELECTRODE.
Claim 2
Dependent Claim
37 words
A GERMANIUM CRYSTAL DEVICE COMPRISING A GERMANIUM CRYSTAL, FIRST AND SECOND WIRE ELECTRODES, A RECTIFYING CONTACT BETWEEN SAID CRYSTAL AND SAID FIRST WIRE ELECTRODE, AND A SUBSTANTIALLY NON-RECTIFYING WELDED CONNECTION BETWEEN SAID CRYSTAL AND SAID SECOND ELECTRODE.
Claim 3
Independent Claim
86 words
THE METHOD OF WELDING A METALLIC ELECTRODE TO A GERMANIUM CRYSTAL ELEMENT, SAID ELEMENT HAVING A FIRST SURFACE AREA TO WHICH THE ELECTRODE IS TO BE WELDED, A SECOND SURFACE AREA SPACED FROM THE FIRST AREA, AND A THIRD SURFACE AREA BETWEEN THE FIRST AND SECOND AREAS, SAID METHOD INCLUDING THE STEPS OF PRESSING ONE END OF SAID ELECTRODE AGAINST SAID FIRST AREA, AND PASSING A CURRENT THROUGH SAID FIRST ELECTRODE AND SAID FIRST AND THIRD AREAS FOR WELDING SAID FIRST ELECTRODE TO SAID FIRST AREA.
Claim 4
Independent Claim
86 words
THE METHOD OF WELDING A METALLIC ELECTRODE TO A GERMANIUM CRYSTAL ELEMENT, SAID ELEMENT HAVING A FIRST SURFACE AREA TO WHICH THE ELECTRODE IS TO BE WELDED, A SECOND SURFACE AREA SPACED FROM THE FIRST AREA, AND A THIRD SURFACE AREA BETWEEN THE FIRST AND SECOND AREAS, SAID METHOD INCLUDING THE STEPS OF PRESSING ONE END OF SAID ELECTRODE AGAINST SAID FIRST AREA, AND PASSING A CURRENT THROUGH SAID FIRST ELECTRODE AND SAID FIRST AND THIRD AREAS FOR WELDING SAID FIRST ELECTRODE TO SAID FIRST AREA.
References Cited (Backward Citations)
US1866351A
Cited
US2116387A
Cited
US2024585A
Cited
US2162487A
Cited
GB604460A
Cited
US2546315A
Cited
US2629672A
Cited
US2609428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |