US3176203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Negative-resistance tecnetron
Assignee: Individual
•
Filing: 1961-09-11
•
Granted: 1965-03-30
•
Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 Teszner Stanislas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:08
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/353; H10; H10D; H10D30/00; H10D30/80; H10D30/87; H10D30/871; H10D62/00; H10D62/10; H10D62/117; H10P; H10P50/00; H10P50/60; H10P50/61; H10P50/613; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A TECNETRON SEMICONDUCTOR TRIGGER DEVICE, COMPRISING A SUBSTANTIALLY CYLINDRICAL SEMICONDUCTOR ROD PROVIDED WITH A CENTRAL GROOVE OF A GIVEN LENGTH, AN OHMIC SOURCE ELECTRODE AND AN OHMIC DRAIN ELECTRODE RESPECTIVELY AT THE ENDS OF SAID ROD, AN ANNULAR GATE ELECTRODE SHORTER THAN SAID GIVEN LENGTH, SURROUNDING THE CENTRAL PART OF SAID CENTRAL GROOVE AND HAVING A RECTIFYING CONTACT THEREWITH, AND AN ADDITIONAL GROOVE IN THE CENTRAL GROOVE LOCATED FOR THE GATE ELECTRODE SUBSTANTIALLY FLUSH WITH SAID GATE ELECTRODE AND ON THAT SIDE THEREOF NEAR THE SOURCE ELECTRODE THE LENGTH OF SAID EXTRA-GROOVE BEING SMALLER THAN THE DIFFUSION LENGTH OF THE MINORITY CARRIERS IN SAID SEMI-CONDUCTOR ROD.
Claim 2
Dependent Claim
106 words
A TECNETRON SEMICONDUCTOR TRIGGER DEVICE, COMPRISING A SUBSTANTIALLY CYLINDRICAL SEMICONDUCTOR ROD PROVIDED WITH A CENTRAL GROOVE OF A GIVEN LENGTH, AN OHMIC SOURCE ELECTRODE AND AN OHMIC DRAIN ELECTRODE RESPECTIVELY AT THE ENDS OF SAID ROD, AN ANNULAR GATE ELECTRODE SHORTER THAN SAID GIVEN LENGTH, SURROUNDING THE CENTRAL PART OF SAID CENTRAL GROOVE AND HAVING A RECTIFYING CONTACT THEREWITH, AND AN ADDITIONAL GROOVE IN THE CENTRAL GROOVE LOCATED FOR THE GATE ELECTRODE SUBSTANTIALLY FLUSH WITH SAID GATE ELECTRODE AND ON THAT SIDE THEREOF NEAR THE SOURCE ELECTRODE THE LENGTH OF SAID EXTRA-GROOVE BEING SMALLER THAN THE DIFFUSION LENGTH OF THE MINORITY CARRIERS IN SAID SEMI-CONDUCTOR ROD.
References Cited (Backward Citations)
US2502479A
Cited
US2939057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |