US3556634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical frequency waveguide
Assignee: National Aeronautics and Space Administration
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Filing: 1965-10-11
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Granted: 1971-01-19
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Expires: 1985-10-11
Abstract
Abstract AN OPTICAL FREQUENCY ELECTROMAGNETIC BEAM IS MAINTAINED AT A POWER LEVEL SUCH THAT ELECTROSTRICTIVE QUALITIES OF A SELECTED MEDIUM IS ALTERED CAUSING THE BEAM TO GENERATE ITS OWN WAVEGUIDE, FOR DIRECTING ENERGY THROUGH SUCH MEDIUM.
Inventors
- 👤 Charles H Townes
- 👤 Raymond Y Chiao
- 👤 Elsa M Garmire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:31
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/12; B23K26/127; B23K26/128; B23K26/02; B23K26/06; B23K26/064; B23K26/0648; B23K26/0665; G; G02; G02B; G02B3/00; G02B3/12; G02B6/00; G02B6/10; G02F; G02F1/00; G02F1/35; G02F1/3511
Claims Analysis
Total Claims: 0
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |