US3672999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of unilluminated solar cells as shunt diodes for a solar array
Assignee: National Aeronautics and Space Administration
•
Filing: 1968-12-19
•
Granted: 1972-06-27
•
Expires: 1988-12-19
Abstract
Abstract In a plurality of solar cells connected in a number of series paths to form both shaded and illuminated solar batteries, each individual cell of a shaded battery being electrically connected in parallel but in opposite polarity with a corresponding cell of an illuminated solar battery, the p-n junction solar cell of the shaded battery behaving as a forward biased diode forming a by-pass conducting path around the corresponding illuminated cell should it become non-conductive to thereby achieve an uninterrupted generation of electrical current by the remaining illuminated cells of the solar battery containing the non-conducting cell.
Inventors
- 👤 Anthony J Barbera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:15
CPC Classifications
H; H10; H10F; H10F19/00; H10F19/70; B; B64; B64G; B64G1/00; B64G1/22; B64G1/42; B64G1/44; B64G1/443; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y10; Y10S; Y10S136/00; Y10S136/291; Y10S136/292
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |