Patent US3681252A successfully refreshed from Google Patents.
US3681252A
Expired / Lapsed
US
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Liquid laser containing cyclooctatetraene
Assignee: Verizon Laboratories Inc
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Filing: 1970-10-29
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Granted: 1972-08-01
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Expires: 1990-10-29
Abstract
Abstract A DYE LASER UTILIZING AN ACTIVE MATERIAL COMPRISING A DYE SELECTED FROM THE GROUP CONSISTING OF RHODAMINE 6G, RHODAMINE S, RHODAMINE B, ACRIDINE RED, KITON RED S AND URANINE IN SOLUTION WITH THE TRIPLET STATE QUENCHER CYCLOOCTATERTRAENE. THE RESULTANT SOLUTION PROVIDES A DYE LASER HAVING RELATIVELY LONG HIGH ENERGY OUTPUT PULSES.
Inventors
- 👤 Charles Brecher
- 👤 Adam Heller
- 👤 Romano Pappalardo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:20
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/20; H01S3/213
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |