US3278273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single crystal barium titanate
Assignee: Individual
•
Filing: 1962-12-28
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Granted: 1966-10-11
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Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 Robert J Fischer
- 👤 Vita Sam Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:37
CPC Classifications
C; C30; C30B; C30B1/00; C30B1/12; C30B1/02; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD OF PRODUFING A SINGLE CRYSTAL BODY OF BARIUM TITANATE HAVING A THICKNESS OF ABOUT THREE MILLIMETERS COMPRISING THE STEPS OF EMBEDDING A SEED CRYSTAL OF BARIUM TITANATE HAVING A THICKNESS OF ABOUT ONE MILLIMETER IN BARIUM TITANATE POWDER, SUBJECTING SAID COMPLETELY EMBEDDED SEED CRYSTAL AT ROOM TEMPERATURES TO PRESSURES OF ABOUT 10,000 P.S.I. TO FORM A PELLET, SAID BARIUM TIANATE POWDER HAVING A UNIFORM PARTICLE SIZE NOT EXEEDING ABOUT 0.5 MICRONS, HOT PRESSING THE FORMED PELLET AT A TEMPERATURE OF ABOUT 1000 TO 1200*C. UNDER A PRESSURE OF ABOUT 5000 P.S.I., AND SUBSEQUENTLY SUBJECTING THE HOT PRESSED PELLET TO A TEMPERATURE OF ABOUT 1250* C. UP TO ABOUT 1600*C. FOR ABOUT 72 HOURS.
Claim 2
Independent Claim
115 words
THE METHOD OF PRODUFING A SINGLE CRYSTAL BODY OF BARIUM TITANATE HAVING A THICKNESS OF ABOUT THREE MILLIMETERS COMPRISING THE STEPS OF EMBEDDING A SEED CRYSTAL OF BARIUM TITANATE HAVING A THICKNESS OF ABOUT ONE MILLIMETER IN BARIUM TITANATE POWDER, SUBJECTING SAID COMPLETELY EMBEDDED SEED CRYSTAL AT ROOM TEMPERATURES TO PRESSURES OF ABOUT 10,000 P.S.I. TO FORM A PELLET, SAID BARIUM TIANATE POWDER HAVING A UNIFORM PARTICLE SIZE NOT EXEEDING ABOUT 0.5 MICRONS, HOT PRESSING THE FORMED PELLET AT A TEMPERATURE OF ABOUT 1000 TO 1200*C. UNDER A PRESSURE OF ABOUT 5000 P.S.I., AND SUBSEQUENTLY SUBJECTING THE HOT PRESSED PELLET TO A TEMPERATURE OF ABOUT 1250* C. UP TO ABOUT 1600*C. FOR ABOUT 72 HOURS.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |