Patent US3842364A successfully refreshed from Google Patents.
US3842364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photochemical iodine laser
Assignee: International Business Machines Corp
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Filing: 1973-02-23
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Granted: 1974-10-15
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Expires: 1993-02-23
Abstract
Abstract The incorporation of a free radical source in an iodine laser for the purpose of removing iodine in its ground state as well as iodine molecules that serve as quenchers of excited iodine. The pumping light that excites the iodine laser also photolyses the free radical source to produce more free radicals at the same time that the excited iodine is produced.
Inventors
- 👤 R Srinivasan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:34
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/095; H01S3/09505; H01S3/14; H01S3/22; H01S3/2215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PHOTOCHEMICAL LASER INCLUDING AN ACTIVE MATERIAL IN A LASING CAVITY AND OPTICAL PUMPING MEANS FOR EXCITING SAID ACTIVE MATERIAL, THE IMPROVEMENT COMPRISING THE USE OF PERFLUOROMETHYL IODIDE AS THE ACTIVE MEDIUM AND AN ADDITIVE OF HEXAFLUOROAZOMETHANE TO SAID ACTIVE MATERIAL SO THAT BOTH SAID ACTIVE MATERIAL AND SAID ADDITIVE ARE PHOTOLYZED SIMULTANEOUSLY BY THE OPERATION OF SAID OPTICAL PUMP.
Claim 2
Dependent Claim
60 words
A PHOTOCHEMICAL LASER INCLUDING AN ACTIVE MATERIAL IN A LASING CAVITY AND OPTICAL PUMPING MEANS FOR EXCITING SAID ACTIVE MATERIAL, THE IMPROVEMENT COMPRISING THE USE OF PERFLUOROMETHYL IODIDE AS THE ACTIVE MEDIUM AND AN ADDITIVE OF HEXAFLUOROAZOMETHANE TO SAID ACTIVE MATERIAL SO THAT BOTH SAID ACTIVE MATERIAL AND SAID ADDITIVE ARE PHOTOLYZED SIMULTANEOUSLY BY THE OPERATION OF SAID OPTICAL PUMP.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |