US3456209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pn junction injection laser using a refractive index gradient to confine the laser beam
Assignee: US Philips Corp
•
Filing: 1964-02-18
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Granted: 1969-07-15
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Expires: 1984-02-18
Abstract
No abstract record available.
Inventors
- 👤 Gesinus Diemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:24
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/30; H01S5/32; Y; Y10; Y10S; Y10S148/00; Y10S148/041; Y10S148/042; Y10S148/065; Y10S148/067; Y10S148/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3295911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |