US3116174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing low-capacitance barrier layers in semi-conductor bodies
Assignee: Telefunken AG
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Filing: 1959-12-29
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Granted: 1963-12-31
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Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 Grust Gerhard
- 👤 Kaiser Reinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
H; H10; H10P; H10P50/00; H10P50/69; H10P50/691; H10P14/00; H10P14/40; H10P14/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE METHOD FOR PRODUCING SEMICONDUTOR JUNTION DEVICES HAVING UNIFORM JUNCTION CAPACITIES, COMPRISING THE STEPS OF PRODUCING A SEMICONDUCTOR BODY HAVING A BARRIER LAYER FORMING A JUNCTION, DEPOSITING A NICKEL LAYER ON THE SURFACE OF SAID BODY PARALLEL WITH SAID JUNCTION, SECURING A CONTACT WAFER OF ETCH-RESISTANT MATERIAL ON THE NICKEL LAYER SO THAT THE FORMATION OF A FURTHER BARRIER LAYER DIRECTLY BELOW SAID WAFER IS AVOIDED, THE AREA OF SAID WAFER BEING SMALLER THAN THE AREA OF THE BARRIER LAYER, AND ETCHING AWAY THOSE PORTIONS OF THE LAYER REMAINING UNCOVERED BY SAID WAFER.
Claim 2
Independent Claim
93 words
THE METHOD FOR PRODUCING SEMICONDUTOR JUNTION DEVICES HAVING UNIFORM JUNCTION CAPACITIES, COMPRISING THE STEPS OF PRODUCING A SEMICONDUCTOR BODY HAVING A BARRIER LAYER FORMING A JUNCTION, DEPOSITING A NICKEL LAYER ON THE SURFACE OF SAID BODY PARALLEL WITH SAID JUNCTION, SECURING A CONTACT WAFER OF ETCH-RESISTANT MATERIAL ON THE NICKEL LAYER SO THAT THE FORMATION OF A FURTHER BARRIER LAYER DIRECTLY BELOW SAID WAFER IS AVOIDED, THE AREA OF SAID WAFER BEING SMALLER THAN THE AREA OF THE BARRIER LAYER, AND ETCHING AWAY THOSE PORTIONS OF THE LAYER REMAINING UNCOVERED BY SAID WAFER.
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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |