US2874341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ohmic contacts to silicon bodies
Assignee: AT&T Inc
•
Filing: 1954-11-30
•
Granted: 1959-02-17
•
Expires: 1974-11-30
Abstract
No abstract record available.
Inventors
- 👤 Frank J Biondi
- 👤 Hugh M Cleveland
- 👤 Miles V Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:57
CPC Classifications
H; H10; H10P; H10P95/00; H10D; H10D62/00; H10D62/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
6. A RECTIFIER COMPRISING A MONOCRYSTALLINE SIICON BODY INCLUDING CONTIGUOUS P- AND (-TYPE CONDUCTIVITY ZONES AND SEPARATE ELECTRODE CONNECTIONS TO THE TWO ZONES EACH CHARACTERIZED AS FORMED OF A BRAZING MIXTURE INCLUDING A BARAZING AGENT AND AN ALLOYING AGENT TAKEN FROM THE GROUP OF VANADIUM, ZIRCONIUM, TANTALUM, NIOBIUM, THORIUM AND TITANIUM.
Claim 2
Dependent Claim
51 words
6. A RECTIFIER COMPRISING A MONOCRYSTALLINE SIICON BODY INCLUDING CONTIGUOUS P- AND (-TYPE CONDUCTIVITY ZONES AND SEPARATE ELECTRODE CONNECTIONS TO THE TWO ZONES EACH CHARACTERIZED AS FORMED OF A BRAZING MIXTURE INCLUDING A BARAZING AGENT AND AN ALLOYING AGENT TAKEN FROM THE GROUP OF VANADIUM, ZIRCONIUM, TANTALUM, NIOBIUM, THORIUM AND TITANIUM.
References Cited (Backward Citations)
US2555001A
Cited
US2570248A
Cited
US2701326A
Cited
US2603693A
Cited
US2654059A
Cited
US2668923A
Cited
US2644852A
Cited
US2677781A
Cited
US2703855A
Cited
US2702360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |