Patent US3312910A successfully refreshed from Google Patents.
US3312910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulation of radiation emitting p-n junctions
Assignee: Individual
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Filing: 1963-05-06
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Granted: 1967-04-04
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Expires: 1983-05-06
Abstract
No abstract record available.
Inventors
- 👤 Franklin F Offner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:09
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/06; H01S5/062; H01S5/06209; H01S5/0622; H01S5/04; H01S5/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A RADIATION EMITTING CRYSTAL OF THE SEMICONDUCTOR TYPE, INCLUDING A P-N JUNCTION, SAID JUNCTION BEING CHARACTERIZED BY HAVING EXCITED ENERGY LEVELS OF FINITE LIFETIME WHICH ARE EXCITED BY A FORWARD EXCITING CURRENT, MEANS FOR PASSING A FORWARD EXCITING CURRENT PULSE WHICH IS SHORT IN COMPARISON WITH THE AVERAGE LIFETIME OF THE EXCITED ENERGY LEVELS AND WHICH HAS AN AMPLITUDE SUFFICIENT TO PRODUCE A HIGH CURRENT DENSITY AT SAID JUNCTION THROUGH SAID JUNCTION, AND MEANS FOR APPLYING REVERSE BIAS VOLTAGE TO SAID JUNCTION IMMEDIATELY FOLLOWING APPLICATION OF SAID CURRENT PULSE AND WITHIN SAID LIFETIME FOLLOWING SAID CURRENT PULSE, THEREBY SHIFTING THE WAVELENGTHS OF THE RADIATION EMITTED BY SAID SEMICONDUCTOR.
Claim 2
Dependent Claim
108 words
A RADIATION EMITTING CRYSTAL OF THE SEMICONDUCTOR TYPE, INCLUDING A P-N JUNCTION, SAID JUNCTION BEING CHARACTERIZED BY HAVING EXCITED ENERGY LEVELS OF FINITE LIFETIME WHICH ARE EXCITED BY A FORWARD EXCITING CURRENT, MEANS FOR PASSING A FORWARD EXCITING CURRENT PULSE WHICH IS SHORT IN COMPARISON WITH THE AVERAGE LIFETIME OF THE EXCITED ENERGY LEVELS AND WHICH HAS AN AMPLITUDE SUFFICIENT TO PRODUCE A HIGH CURRENT DENSITY AT SAID JUNCTION THROUGH SAID JUNCTION, AND MEANS FOR APPLYING REVERSE BIAS VOLTAGE TO SAID JUNCTION IMMEDIATELY FOLLOWING APPLICATION OF SAID CURRENT PULSE AND WITHIN SAID LIFETIME FOLLOWING SAID CURRENT PULSE, THEREBY SHIFTING THE WAVELENGTHS OF THE RADIATION EMITTED BY SAID SEMICONDUCTOR.
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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |