US3640891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithia-silica glass laser containing various alkaline earth oxides
Assignee: Schott Optical Glass Inc
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Filing: 1969-06-06
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Granted: 1972-02-08
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Expires: 1989-06-06
Abstract
Abstract GLASS LASER COMPOSITIONS BASED ON THE LITHIA-SILICA GLASS SYSTEM CONTAINING AS SELECTED ALKALINE EARTHS MGO, BEO, SRO, BAO, MIXTURES THEREOF, AND MIXTURES CONTAINING CAO. THESE GLASSES ARE EMPLOYED AS HOSTS FOR NEODYMIUM OXIDE, ND2O3, AS THE LASEABLE SUBSTANCE. GOOD EFFICIENCIES CAN BE OBTAINED THEREBY.
Inventors
- 👤 Haynes A Lee Jr
- 👤 Charles F Rapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:06
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/17; C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/095; 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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |