US3857793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent organic compound laser
Assignee: Verizon Laboratories Inc
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Filing: 1973-05-01
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Granted: 1974-12-31
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Expires: 1993-05-01
Abstract
Abstract A discharge excited laser wherein the active material is a vaporized highly fluorescent aromatic organic compound, such as perylene, coronene, p-terphenyl, 1,6-diphenyl-hexa-1,3,5-triene, 9.10-diphenylanthracene, and 1,4-bis-2-(4-methyl-5phenyloxazolyl) benzene.
Inventors
- 👤 R Pappalardo
- 👤 S Ahmed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:40
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/22; H01S3/223; H01S3/2235; H01S3/02; H01S3/03; H01S3/036
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
52 words
IN A DISCHARGE-EXCITED LASER, AN ACTIVE MEDIUM IN THE FORM OF VAPORIZED P-TERPHENYL, THE PARTIAL PRESSURE OF SAID PTERPHENYL BEING, AT OPERATING TEMPERATURE ABOUT 0.1 TORR TO ABOUT 1 TORR, AND A SMALL QUANTITY OF A NOBLE OR INERT GAS SELECTED FROM THE GROUP CONSISTING OF ARGON, HELIUM, NEON XENON AND KRYPTON.
Claim 2
Dependent Claim
52 words
IN A DISCHARGE-EXCITED LASER, AN ACTIVE MEDIUM IN THE FORM OF VAPORIZED P-TERPHENYL, THE PARTIAL PRESSURE OF SAID PTERPHENYL BEING, AT OPERATING TEMPERATURE ABOUT 0.1 TORR TO ABOUT 1 TORR, AND A SMALL QUANTITY OF A NOBLE OR INERT GAS SELECTED FROM THE GROUP CONSISTING OF ARGON, HELIUM, NEON XENON AND KRYPTON.
Claim 3
Dependent Claim
11 words
The laser of claim 1 wherein said inert gas is argon.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |