US3404305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three region semiconductor having rectifying junctions of different compositions so that wavelength of emitted radiation depends on direction of current flow
Assignee: US Philips Corp
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Filing: 1966-01-18
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Granted: 1968-10-01
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Expires: 1986-01-18
Abstract
No abstract record available.
Inventors
- 👤 Wright Hubert Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:22
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H29/00; H10H29/10; Y; Y10; Y10S; Y10S148/00; Y10S148/067; Y10S148/099; Y10S148/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3278814A
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US3312910A
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US3330991A
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US3309553A
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US3267294A
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US3283160A
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US3351828A
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US3351827A
Cited
US3341857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |