US3087100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ohmic contacts to semiconductor devices
Assignee: AT&T Inc
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Filing: 1959-04-14
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Granted: 1963-04-23
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Expires: 1979-04-14
Abstract
No abstract record available.
Inventors
- 👤 Ignatius C Savadelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:30
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/10; H10D10/00; H10D99/00; H10P; H10P95/00; H10W; H10W72/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A MINORITY CARRIER DIFFUSED BASE GERMANIUM TRANSISTOR OF A P-N-P CONFIGURATION CONPRISING A GERMANIUM WATER INCLUDING AN EMITTER, A BASE AND A COLLECTOR REGION, THE P-TYPE COLLECTOR REGION INCLUDING TWO ZONES OF WHICH A FIRST ZONE WHEREIN THE LIFETIME OF MINORITY CARRIERS IS GREATER THAN 1 MIXCROSECOND IS ADJACENT TO THE COLLECTOR JUNCTION, AND A SECOND ZONE WHEREIN THE LIFETIME OF MINORITY CARRIERS IS OF THE ORDER OF 0.001 MICROSECOND IS SEVERAL COLLECTOR BARRIER THICKNESS DISTANT FROM SAID COLLETROR JUNCTION, AND AN ELECTRODE CONTACTING SAID SECOND ZONE.
Claim 2
Dependent Claim
87 words
A MINORITY CARRIER DIFFUSED BASE GERMANIUM TRANSISTOR OF A P-N-P CONFIGURATION CONPRISING A GERMANIUM WATER INCLUDING AN EMITTER, A BASE AND A COLLECTOR REGION, THE P-TYPE COLLECTOR REGION INCLUDING TWO ZONES OF WHICH A FIRST ZONE WHEREIN THE LIFETIME OF MINORITY CARRIERS IS GREATER THAN 1 MIXCROSECOND IS ADJACENT TO THE COLLECTOR JUNCTION, AND A SECOND ZONE WHEREIN THE LIFETIME OF MINORITY CARRIERS IS OF THE ORDER OF 0.001 MICROSECOND IS SEVERAL COLLECTOR BARRIER THICKNESS DISTANT FROM SAID COLLETROR JUNCTION, AND AN ELECTRODE CONTACTING SAID SECOND ZONE.
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |