Patent US1094755A successfully refreshed from Google Patents.
Patent US3674455A successfully refreshed from Google Patents.
US3674455A
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US
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Process for the synthesis of glass and single crystal germanates of identical composition
Assignee: United States Department of the Air Force
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Filing: 1970-07-31
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Granted: 1972-07-04
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Expires: 1990-07-31
Abstract
Abstract A PROCESS FOR FORMING GERMANATE COMPOSITIONS FROM A STARTING MIXTURE IN WHICH THE CONCENTRATION RATIO LIMITS OF THE OXYGEN IONS TO GERMANIUM IONS IS FROM 2.0:1 TO 3.0:1; THAT IS, 2.0:1$O:GE$3.0:1. THE GERMANATE COMPOSITIONS WITHIN THE ABOVE LIMITS INCLUDE GERMANATE GLASSES AND GERMANATE SINGLE CRYSTALS OF IDENTICAL COMPOSITION. SPECIFICALLY, THE PROCESS INVOLVES THE STEPS OF INTIMATELY MIXING APPROPRIATE QUANTITIES OF SODIUM OXIDE AND GERMANIUM OXIDE FOLLOWED BY THE STEPS OF HEATING THE MIXTURE TO A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 1050* TO 1525*C. WITH SUBSEQUENT CONTROLLED COOLING TO ROOM TEMPERATURE.
Inventors
- 👤 Cortland O Dugger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:23
CPC Classifications
C; C03; C03C; C03C10/00; C03C3/00; C03C3/12; C03C3/253; C30; C30B; C30B15/00; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/32; Y; Y10; Y10S; Y10S501/00; Y10S501/90
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |