Patent US3019944A successfully refreshed from Google Patents.
US3274459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low impedance coupled transmission line and solid state tunnel diode structure
Assignee: Individual
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Filing: 1964-05-07
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Granted: 1966-09-20
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Expires: 1984-05-07
Abstract
No abstract record available.
Inventors
- 👤 Sterzer Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:56
CPC Classifications
H; H10; H10D; H10D86/00; H10D86/80; H03; H03B; H03B7/00; H03B7/12; H03B7/14; H03B7/02; H03B7/06; H03B7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A VOLTAGE CONTROLLED NEGATIVE RESISTANCE SOLID STATE DIODE ASSEMBLY COMPRISING AN ELECTRICALLY CONDUCTIVE BASE PLATE HAVING THICKNESS SUFFICIENT TO IMPART RIGIDITY TO THE ASSEMBLY AND HAVING AT LEAST ONE FLAT SURFACE, A STRIPLINE TRANSMISSION LINE COMPOSED OF TWO THIN LAYERS OF CONDUCTING MATERIAL SEPARATED BY A THIN DIELECTRIC LAYER, ONE LAYER BEING A GROUND PLANE CONDUCTOR AND THE OTHER A CONDUCTOR STRIP, SAID GROUND PLANE CONDUCTOR BEING ELECTRICALLY SURFACE UNITED TO THE FLAT SURFACE OF SAID BASE PLATE, A CHAMBER FORMED IN SAID BASE PLATE OPENING TOWARD SAID STRIPLINE, A SEMICONDUCTOR CRYSTAL HAVING A HIGH CONCENTRATION OF FREE CHARGE CARRIERS AND SECURED IN SAID CHAMBER WITH A NONRECTIFYING LOW IMPEDANCE UNION SAID CRYSTAL HAVING ITS TOP SURFACE SUBSTANTIALLY IN THE PLANE
Claim 2
Dependent Claim
121 words
A VOLTAGE CONTROLLED NEGATIVE RESISTANCE SOLID STATE DIODE ASSEMBLY COMPRISING AN ELECTRICALLY CONDUCTIVE BASE PLATE HAVING THICKNESS SUFFICIENT TO IMPART RIGIDITY TO THE ASSEMBLY AND HAVING AT LEAST ONE FLAT SURFACE, A STRIPLINE TRANSMISSION LINE COMPOSED OF TWO THIN LAYERS OF CONDUCTING MATERIAL SEPARATED BY A THIN DIELECTRIC LAYER, ONE LAYER BEING A GROUND PLANE CONDUCTOR AND THE OTHER A CONDUCTOR STRIP, SAID GROUND PLANE CONDUCTOR BEING ELECTRICALLY SURFACE UNITED TO THE FLAT SURFACE OF SAID BASE PLATE, A CHAMBER FORMED IN SAID BASE PLATE OPENING TOWARD SAID STRIPLINE, A SEMICONDUCTOR CRYSTAL HAVING A HIGH CONCENTRATION OF FREE CHARGE CARRIERS AND SECURED IN SAID CHAMBER WITH A NONRECTIFYING LOW IMPEDANCE UNION SAID CRYSTAL HAVING ITS TOP SURFACE SUBSTANTIALLY IN THE PLANE
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |