US3162770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor structure
Assignee: International Business Machines Corp
•
Filing: 1958-09-26
•
Granted: 1964-12-22
•
Expires: 1978-09-26
Abstract
No abstract record available.
Inventors
- 👤 Richard F Rutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:51
CPC Classifications
H; H10; H10P; H10P95/00; H10D; H10D88/00; H10D99/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A TRANSISTOR CHARACTERIZED BY; AN EMITTER CONNECTION HAVING FIRST AND SECOND REGIONS FORMING A PN JUNCTION WITH THE BASE REGION OF SAID TRANSISTOR AND OF OPPOSITE CONDUCTIVITY TYPE SEMICONDUCTOR MATERIAL JOINED AT A PN JUNCTION, SAID FIRST REGION BEING OF A CONDUCTIVITY TYPE OPPOSITE TO THE CONDUCTIVITY OF THE BASE REGION OF SAID TRANSISTOR AND MEANS FOR APPLYING A REVERSE BIAS TO SAID LAST MENTIONED PN JUNCTION COUPLED BETWEEN SAID SECOND REGION AND SAID BASE REGION.
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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) | 1967-12-22 | 1968-06-22 | 1968-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-22 | 1972-06-22 | 1972-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-22 | 1976-06-22 | 1976-12-22 | $7700.00 | Window Closed / Lapsed |