US3209215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterojunction triode
Assignee: International Business Machines Corp
•
Filing: 1962-06-29
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Granted: 1965-09-28
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Esaki Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:05
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/30; H10D48/32; H10D48/36; H10D48/362; H10D62/00; H10D62/40; H10D62/405; H10D62/80; H10D62/82; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A SEMICONDUCTOR HETEROJUNCTION TRIODE COMPRISING THREE REGIONS, THE FIRST REGION BEING CONSTITUTED OF A SEMICONDUCTOR MATERIAL HAVING A FIRST ENERGY BAND GAP, SECOND AND THIRD REGIONS BEING IN CONTACT WITH SAID FIRST REGION AND BEING CONSTITUTED OF A SEMICONDUCTOR MATERIAL HAVING
Claim 2
Dependent Claim
41 words
A SEMICONDUCTOR HETEROJUNCTION TRIODE COMPRISING THREE REGIONS, THE FIRST REGION BEING CONSTITUTED OF A SEMICONDUCTOR MATERIAL HAVING A FIRST ENERGY BAND GAP, SECOND AND THIRD REGIONS BEING IN CONTACT WITH SAID FIRST REGION AND BEING CONSTITUTED OF A SEMICONDUCTOR MATERIAL HAVING
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |