US3353114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel-injection light emitting devices
Assignee: Boeing Co
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Filing: 1963-09-09
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Granted: 1967-11-14
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Expires: 1983-09-09
Abstract
No abstract record available.
Inventors
- 👤 Russell V Hanks
- 👤 Unwin Alexander Matthew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:13
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/30; H01S5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A LASER COMPRISING A SANDWICH STRUCTURE INCLUDING A FIRST LAYER OF SEMICONDUCTOR MATERIAL, A SECOND LAYER OF DIELECTRIC MATERIAL OF A THICKNESS LESS THAN 100 ANGSTROM UNITS NEXT TO THE FIRST LAYER, AND A THIRD LAYER AS A SOURCE OF CURRENT CARRIERS NEXT TO THE SECOND LAYER; MEANS FOR INJECTING CURRENT CARRIERS FROM THETHIRD LAYER INTO THE FIRST LAYER BY TUNNELING, INCLUDING A VOLTAGE SOURCE HAVING OPPOSING TERMINALS CONNECTED TO THE EXPOSED FACES OF THE FIRST AND THIRD LAYERS, SAID LASER FURTHER INCLUDING TWO REFLECTIVE PLANE PARALLEL SURFACES DISPOSED TRANSVERSE TO THE LAYERS, WITH THE FIRST LAYER LYING THEREBETWEEN AND DISPOSED PERPENDICULAR THERETO, THE VALUE OF SOURCE VOLTAGE AND THE AVAILABLE QUANTITY OF TUNNELING CARRIERS FROM THE THIRD LAYER SUFFICIENTLY GREAT TO PRODUCE LASER ACTION.
Claim 2
Dependent Claim
125 words
A LASER COMPRISING A SANDWICH STRUCTURE INCLUDING A FIRST LAYER OF SEMICONDUCTOR MATERIAL, A SECOND LAYER OF DIELECTRIC MATERIAL OF A THICKNESS LESS THAN 100 ANGSTROM UNITS NEXT TO THE FIRST LAYER, AND A THIRD LAYER AS A SOURCE OF CURRENT CARRIERS NEXT TO THE SECOND LAYER; MEANS FOR INJECTING CURRENT CARRIERS FROM THETHIRD LAYER INTO THE FIRST LAYER BY TUNNELING, INCLUDING A VOLTAGE SOURCE HAVING OPPOSING TERMINALS CONNECTED TO THE EXPOSED FACES OF THE FIRST AND THIRD LAYERS, SAID LASER FURTHER INCLUDING TWO REFLECTIVE PLANE PARALLEL SURFACES DISPOSED TRANSVERSE TO THE LAYERS, WITH THE FIRST LAYER LYING THEREBETWEEN AND DISPOSED PERPENDICULAR THERETO, THE VALUE OF SOURCE VOLTAGE AND THE AVAILABLE QUANTITY OF TUNNELING CARRIERS FROM THE THIRD LAYER SUFFICIENTLY GREAT TO PRODUCE LASER ACTION.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |