US3716349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing laser glasses having high resistance to internal damage and the product produced thereby
Assignee: American Optical Corp
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Filing: 1971-05-17
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Granted: 1973-02-13
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Expires: 1991-05-17
Abstract
Abstract LASER GLASS WHICH HAS HIGH RESISTANCE TO INTERNAL DAMAGE RESULTING FROM INCLUSIONS IS PRODUCED BY A METHOD WHICH INCLUDES THE BUBBLING OF EITHER PURE OXYGEN OR AN OXIDIZING OXYGEN-RICH GAS MIXTURE THROUGH THE MELT DURING AT LEAST A PORTION OF THE STIRRING OPERATIONS IN ORDER TO MAINTAIN AN OXIDIZING ENVIROMENT THROUGHOUT THE MELT TO PREVENT THE REDUCTION OF ANY MATERIAL IN THE MELT TO METALLIC OR SEMICONDUCTIVE STATES
Inventors
- 👤 E Deeg
- 👤 E Snitzer
- 👤 A Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:19
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/193; C03C; C03C1/00; C03C3/00; C03C4/00; C03C4/0071
Claims Analysis
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |