US3677718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Technique for flux growth of barium titanate single crystals
Assignee: Corning Glass Works
•
Filing: 1969-05-05
•
Granted: 1972-07-18
•
Expires: 1989-05-05
Abstract
Abstract PROCESS FOR THE GROWTH OF LARGE, THICK BARIUM TITANATE SINGLE CRYSTALS BY HEATING A FLUX CONTAINING BARIUM TITANATE, INSERTING THEREIN BARIUM TITANATE SEED CRYSTALS, COOLING THE MIXTURE TO CRYSTALLIZE BARIUM TITANATE SINGLE CRYSTALS, WHILE MAINTAINING A TEMPERATURE GRADIENT ACROSS THE MIXTURE AND REMOVING THE GROWN BARIUM TITANATE SINGLE CRYSTALS. THE CRYSTALS FORMED BY THE ABOVE PROCESS FIND PARTICULAR USAGE IN OPTICAL DEVICES.
Inventors
- 👤 William N Lawless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:02
CPC Classifications
C; C30; C30B; C30B9/00; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |