Patent US3939366A successfully refreshed from Google Patents.
US3939366A
Expired / Lapsed
US
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Method of converting radioactive energy to electric energy and device for performing the same
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1973-10-09
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Granted: 1976-02-17
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Expires: 1993-10-09
Abstract
Abstract Radioactive energy is converted to electric energy by irradiating a converter body of semiconductor material etc. with radioactive rays to produce a number of electron-hole pairs in the converter, applying a magnetic field to the converter in a direction perpendicular to the direction of diffusion of the electron-hole pairs to separate the electrons and the holes in a direction perpendicular to the direction of diffusion of the electron-hole pairs and to the direction of application of the magnetic field and deriving the electrons and the holes from electrodes provided on the respective end faces of the converter body as electric energy.
Inventors
- 👤 Yasuro Ato
- 👤 Soji Miyagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:55
CPC Classifications
G; G21; G21D; G21D7/00; G21D7/04; Y; Y02; Y02E; Y02E30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
220 words
A device for converting radioactive energy to electric energy, said device comprising in combination, a first, second and third magnetic body, a plurality of InSb monocrystalline semi-conductor bodies stacked vertically between said first and second and between said second and third magnetic body, each stacked plurality of semi-conductor bodies being separated from the magnetic body by an insulating plate, a layer of 210 Po radioactive substance sandwiched between adjacent semi-conductor bodies and disposed to produce electron hole pairs in said semi-conductor bodies, wherein said electron hole pairs diffuse toward an unirradiated region of said semi-conductor bodies to eleminate the differences in density between electrons and holes in each of said semiconductor bodies, said magnetic bodies separating said electrons and said holes from each other by means of the resultant magnetic field wherein said electrons and holes are caused to move in a direction perpendicular to the direction of diffusion of the electron-hole pairs, and a U-shaped plate member of high magnetic permeability disposed by the leg members thereof on the outer surfaces of said first and third magnetic bodies, said U-shaped plate member supporting the magnetic bodies and said stacked semi-conductor bodies in association, each of said semi-conductor bodies having electrodes on opposite sides thereof to receive separated electron-hole pairs of electric energy generated within each of the semi-conductor bodies.
Claim 2
Independent Claim
220 words
A device for converting radioactive energy to electric energy, said device comprising in combination, a first, second and third magnetic body, a plurality of InSb monocrystalline semi-conductor bodies stacked vertically between said first and second and between said second and third magnetic body, each stacked plurality of semi-conductor bodies being separated from the magnetic body by an insulating plate, a layer of 210 Po radioactive substance sandwiched between adjacent semi-conductor bodies and disposed to produce electron hole pairs in said semi-conductor bodies, wherein said electron hole pairs diffuse toward an unirradiated region of said semi-conductor bodies to eleminate the differences in density between electrons and holes in each of said semiconductor bodies, said magnetic bodies separating said electrons and said holes from each other by means of the resultant magnetic field wherein said electrons and holes are caused to move in a direction perpendicular to the direction of diffusion of the electron-hole pairs, and a U-shaped plate member of high magnetic permeability disposed by the leg members thereof on the outer surfaces of said first and third magnetic bodies, said U-shaped plate member supporting the magnetic bodies and said stacked semi-conductor bodies in association, each of said semi-conductor bodies having electrodes on opposite sides thereof to receive separated electron-hole pairs of electric energy generated within each of the semi-conductor bodies.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |