Patent US3140382A successfully refreshed from Google Patents.
US3140382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining component parts of envelopes for high-power transistors
Assignee: US Philips Corp
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Filing: 1962-08-31
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Granted: 1964-07-07
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Expires: 1982-08-31
Abstract
No abstract record available.
Inventors
- 👤 Dijkmeijer Henricus Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:13
CPC Classifications
H; H10; H10W; H10W95/00; B; B23; B23K; B23K11/00; B23K11/16; B23K11/18; B23K35/00; B23K35/001; B23K35/007; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; H10W99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD OF JOINING METAL BODIES AT LEAST ONE OF WHICH IS CINSTITUTED OF COPPER COMPRISING THE STEPS OF COVERING A PORTION OF TH SURFACE OF THE BODY CONSTITUTED OF COPPER WITH A NICKEL LAYER HAVING THICKNESS BETWEEN ABOUT 4 AND 10 MICRONS, HEATING THE NICKEL COATED COPPER BODY TO A TEMPERATURE BETWEEN 500*C. AND 900*C. FOR A SUFFICIENT TIME FOR THE NICKEL TO DIFFUSE SUPERFICIALLY INTO THE COPPER, COVERING THE SO-TREATED COPPER BODY WITH A PHOSPHORUS-CONTAINING NICKEL LAYER, AND JOINING THE SO COVERED BODY TO ANOTHER METAL BODY BY LOCALLY HEATING THE BODIES WHILE IN CONTACT WITH EACH OTHER.
Claim 2
Independent Claim
100 words
A METHOD OF JOINING METAL BODIES AT LEAST ONE OF WHICH IS CINSTITUTED OF COPPER COMPRISING THE STEPS OF COVERING A PORTION OF TH SURFACE OF THE BODY CONSTITUTED OF COPPER WITH A NICKEL LAYER HAVING THICKNESS BETWEEN ABOUT 4 AND 10 MICRONS, HEATING THE NICKEL COATED COPPER BODY TO A TEMPERATURE BETWEEN 500*C. AND 900*C. FOR A SUFFICIENT TIME FOR THE NICKEL TO DIFFUSE SUPERFICIALLY INTO THE COPPER, COVERING THE SO-TREATED COPPER BODY WITH A PHOSPHORUS-CONTAINING NICKEL LAYER, AND JOINING THE SO COVERED BODY TO ANOTHER METAL BODY BY LOCALLY HEATING THE BODIES WHILE IN CONTACT WITH EACH OTHER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |