Patent US3458703A successfully refreshed from Google Patents.
US3458703A
Expired / Lapsed
US
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Reverse biased semiconductor laser light modulator fabricated from same material as laser light source
Assignee: Hitachi Ltd
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Filing: 1965-07-26
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Granted: 1969-07-29
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Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Masatoshi Migitaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:35
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/02; H01S5/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3121203A
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US3102201A
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US3043959A
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US3200259A
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US3229106A
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US3369133A
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US3229104A
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US3283160A
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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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |