US3446603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Growth of lithium niobate crystals
Assignee: AT&T Inc
•
Filing: 1965-07-12
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Granted: 1969-05-27
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Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 Gabriel M Loiacono
- 👤 Kurt Nassau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:06
CPC Classifications
C; C01; C01G; C01G33/00; C30; C30B; C30B15/00; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/30; C01P; C01P2006/00; C01P2006/60; Y; Y10; Y10S; Y10S117/00; Y10S117/901; Y10S117/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
PROCEDURE FOR THE SEEDED GROWTH OF LITHIUM NIOBATE COMPRISING FREEZING MATERIAL FROM A MELT CONTAINING FROM 0.1 ATOM PERCENT UP TO FIVE ATOM PERCENT BASED ON NIOBIUM OF AT LEAST ONE ION SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND TUNGSTEN ON A SEED CRYSTAL SO ARRANGED THAT GROWTH ON THE SEED IS AT AN ANGLE OF BETWEEN 18 DEGREES AND 14 DEGREES FROM THE C AXIS AND IN WHICH
Claim 2
Dependent Claim
70 words
PROCEDURE FOR THE SEEDED GROWTH OF LITHIUM NIOBATE COMPRISING FREEZING MATERIAL FROM A MELT CONTAINING FROM 0.1 ATOM PERCENT UP TO FIVE ATOM PERCENT BASED ON NIOBIUM OF AT LEAST ONE ION SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND TUNGSTEN ON A SEED CRYSTAL SO ARRANGED THAT GROWTH ON THE SEED IS AT AN ANGLE OF BETWEEN 18 DEGREES AND 14 DEGREES FROM THE C AXIS AND IN WHICH
References Cited (Backward Citations)
US3346344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |