US3023167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Room temperature ferroelectric materials
Assignee: International Business Machines Corp
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Filing: 1960-07-08
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Granted: 1962-02-27
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Expires: 1980-07-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Dunne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:31
CPC Classifications
C; C30; C30B; C30B1/00; C30B1/02; C30B29/00; C30B29/10; C30B29/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A FERROELECTRIC MATERIAL HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
A FERROELECTRIC MATERIAL HAVING THE FORMULA
Claim 3
Independent Claim
77 words
A METHOD OF MAKING A ROOM TEMPEATURE FERROELECTRIC CRYSTAL WHICH HAS THE FORMULA BALI2XF4XO4-4X WHEREIN "X" RANGES FROM 0.15-0.30 COMPRISING THE STEPS OF HEATING 12.07 GRAMS OF LIF, 87.68 GRAMS BAF2 AND BETWEEN 0.34 AND 8.5 GRAMS ALF3.3H2O AT ABOUT 1300*C. FOR ABOUT 4 HOURS IN AIR AND COOLING AT THE RATE OF ABOUT 40*C. PER HOUR TO BELOW ABOUT 800*C. AND THEREAFTER COOLING THE MASS TO ROOM TEMPERATURE AND SEPARATING THE HEXAGONAL CRYSTALS FROM THE MASS.
Claim 4
Independent Claim
77 words
A METHOD OF MAKING A ROOM TEMPEATURE FERROELECTRIC CRYSTAL WHICH HAS THE FORMULA BALI2XF4XO4-4X WHEREIN "X" RANGES FROM 0.15-0.30 COMPRISING THE STEPS OF HEATING 12.07 GRAMS OF LIF, 87.68 GRAMS BAF2 AND BETWEEN 0.34 AND 8.5 GRAMS ALF3.3H2O AT ABOUT 1300*C. FOR ABOUT 4 HOURS IN AIR AND COOLING AT THE RATE OF ABOUT 40*C. PER HOUR TO BELOW ABOUT 800*C. AND THEREAFTER COOLING THE MASS TO ROOM TEMPERATURE AND SEPARATING THE HEXAGONAL CRYSTALS FROM THE MASS.
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) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |