US3852794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed bulk semiconductor microwave switch
Assignee: Leland Stanford Junior University
•
Filing: 1972-05-11
•
Granted: 1974-12-03
•
Expires: 1992-05-11
Abstract
Abstract A bulk semiconductor switching device formed of compounds of material selected from columns III and V of the Periodic Table which switches from a high conduction state to a current saturation state responsive to applied electric fields in times determined by electron heating and scattering within the bulk of the device.
Inventors
- 👤 G Pearson
- 👤 G Foggiato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:01
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/15; H03; H03C; H03C7/00; H03K; H03K17/00; H03K17/04; H03K17/51; H03K17/56; H03K17/74; H10; H10N; H10N80/00; H10N80/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
76 words
A SEMICONDUCTOR SWITCHING DEVICE INCLUDING A BODY OF SEMICONDUCTOR MATERIAL AND SPACED TERMAINAL MEANS ON SAID BODY WHEREBY AT LEAST A PORTION OF SAID BODY IS DISPOSED BETWEEN SAID TERMINAL IN WHICH SAID BODY OF MATERIAL COMPRISES N-TYPE SEMICONDUCTOR GA1-XA1XAS WHERE X IS 0.40$0.03 TO PROVIDE ENERGY BANDS HAVING SMALL ENERGY DIFFERENCES AND FIG-01 WHICH SWITCHES FROM A LOW RESISTANCE TO A HIGH RESISTANCE WITH CURRENT SATURATION RESPONSIVE TO A SWITCHING VOLTAGE APPLIED BETWEEN SAID TERMINALS.
Claim 2
Dependent Claim
76 words
A SEMICONDUCTOR SWITCHING DEVICE INCLUDING A BODY OF SEMICONDUCTOR MATERIAL AND SPACED TERMAINAL MEANS ON SAID BODY WHEREBY AT LEAST A PORTION OF SAID BODY IS DISPOSED BETWEEN SAID TERMINAL IN WHICH SAID BODY OF MATERIAL COMPRISES N-TYPE SEMICONDUCTOR GA1-XA1XAS WHERE X IS 0.40$0.03 TO PROVIDE ENERGY BANDS HAVING SMALL ENERGY DIFFERENCES AND FIG-01 WHICH SWITCHES FROM A LOW RESISTANCE TO A HIGH RESISTANCE WITH CURRENT SATURATION RESPONSIVE TO A SWITCHING VOLTAGE APPLIED BETWEEN SAID TERMINALS.
Claim 3
Dependent Claim
10 words
A semiconductor device as in claim 1 wherein x 0.40.
References Cited (Backward Citations)
US3336535A
Cited
US3614549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |