US3177414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device comprising a plurality of transistors
Assignee: NEC Corp
•
Filing: 1962-07-03
•
Granted: 1965-04-06
•
Expires: 1982-07-03
Abstract
No abstract record available.
Inventors
- 👤 Kurosawa Toshio
- 👤 Sasaki Ichiemon
- 👤 Shiba Hiroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:33
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/60; H10D84/67; H10D84/673; H10D84/01; H10D84/0112; H10D84/0119; H10D84/0121; H10D84/02; H10D84/03; H10D84/038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A COMPOUND SEMICONDUCTOR DEVICE COMPRISING A SINGLE BODY OF SEMICONDUCTOR MATERIAL, SAID BODY INCLUDING A FIRST AND A SECOND TRANSISTOR EACH HAVING EMITTER, BASE AND COLLECTOR REGIONS OF GENERALLY ANNULAR SHAPE, SAID REGIONS BEING SUBSTANTIALLY CONCENTRIC AND TERMINATING AT A SURFACE OF SAID BODY, ONLY ONE OF SAID REGIONS BEING COMMON TO EACH OF SAID TRANSISTORS, AND THE EMITTER, BASE AND COLLECTOR REGIONS OF SAID SECOND TRANSISTOR BEING RESPECTIVELY LARGER THAN THE EMITTER, BASE AND COLLECTOR REGIONS OF SAID FIRST TRANSISTOR TO RENDER SAID SECOND TRANSISTOR CAPABLE OF HANDLING GREATER POWER THAN SAID FIRST TRANSISTOR.
Claim 2
Dependent Claim
95 words
A COMPOUND SEMICONDUCTOR DEVICE COMPRISING A SINGLE BODY OF SEMICONDUCTOR MATERIAL, SAID BODY INCLUDING A FIRST AND A SECOND TRANSISTOR EACH HAVING EMITTER, BASE AND COLLECTOR REGIONS OF GENERALLY ANNULAR SHAPE, SAID REGIONS BEING SUBSTANTIALLY CONCENTRIC AND TERMINATING AT A SURFACE OF SAID BODY, ONLY ONE OF SAID REGIONS BEING COMMON TO EACH OF SAID TRANSISTORS, AND THE EMITTER, BASE AND COLLECTOR REGIONS OF SAID SECOND TRANSISTOR BEING RESPECTIVELY LARGER THAN THE EMITTER, BASE AND COLLECTOR REGIONS OF SAID FIRST TRANSISTOR TO RENDER SAID SECOND TRANSISTOR CAPABLE OF HANDLING GREATER POWER THAN SAID FIRST TRANSISTOR.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |