Patent US3203899A successfully refreshed from Google Patents.
US3203899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of materials capable of amplifying wave energy
Assignee: —
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Filing: —
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Granted: 1965-08-31
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Expires: 1982-08-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/44; C; C30; C30B; C30B11/00; C30B15/00; C30B29/00; C30B29/10; C30B29/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN THE PROCESS FOR MANUFACTURING SINGLE CRYSTALS OF A MATERIAL CAPABLE OF AMPLIFYING WAVE ENERGY BY STIMULATED EMISSION OF RADIATION, THE STEPS OF MIXING A FLUORIDE HOST MATERIAL WITH AMMONIUM FLUORIDE AND ABOUT 0.005 TO 3 MOLE PERCENT OF AN ELEMENT IN COMPOUND FORM SLECTED FROM THE GROUP CONSISTING OF THE RARE EARTHS AND TRANSITION ELEMENTS, AND HEATING SAID MIXTURE TO ITS MELTING POINT TO PERMIT THE AMMONIUM FLUORIDE TO COMBINE WITH IMPURITIES AND VOLATILIZE, LEAVING A PURE MIXTURE OF THE HOST MATERIAL AND AN ELEMENT SELECTED FROM THE RARE EARTHS AND TRANSITION ELEMENTS.
Claim 2
Dependent Claim
94 words
IN THE PROCESS FOR MANUFACTURING SINGLE CRYSTALS OF A MATERIAL CAPABLE OF AMPLIFYING WAVE ENERGY BY STIMULATED EMISSION OF RADIATION, THE STEPS OF MIXING A FLUORIDE HOST MATERIAL WITH AMMONIUM FLUORIDE AND ABOUT 0.005 TO 3 MOLE PERCENT OF AN ELEMENT IN COMPOUND FORM SLECTED FROM THE GROUP CONSISTING OF THE RARE EARTHS AND TRANSITION ELEMENTS, AND HEATING SAID MIXTURE TO ITS MELTING POINT TO PERMIT THE AMMONIUM FLUORIDE TO COMBINE WITH IMPURITIES AND VOLATILIZE, LEAVING A PURE MIXTURE OF THE HOST MATERIAL AND AN ELEMENT SELECTED FROM THE RARE EARTHS AND TRANSITION ELEMENTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |