US3344073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for optionizing electrical and physical characteristics of ferroelectric materials
Assignee: Honeywell Inc
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Filing: 1964-11-18
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Granted: 1967-09-26
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Expires: 1984-11-18
Abstract
No abstract record available.
Inventors
- 👤 William R Bratschun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:22
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/50; C04B35/01; C04B35/46; C04B35/48; C04B35/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF PRODUCING IMPROVED CERAMIC BODIES COMPRISING SOLID SOLUTIONS OF LEAD TITANATE AND LEAD ZIRCONATE IN WHICH THE ATOMIC RATIO OF ZR TO TI IS FROM 90:10 TO 40:60 WHICH INCLUDES PREPARING A MIXTURE OF PBO,ZRO2 AND TIO2 INREQUISITE PROPORTIONS TO PRODUCE THE SAID SOLUTIONS OF LEAD TITANATE AND LEAD ZIRCONATE, FORMING SAID MIXTURE INTO A BODY OF DESIRED SHAPE, FIRING SAID MIXTURE UNDER ATMOSPHERIC PRESSURE CONDITIONS AT A FIRST ELEVATED TEMPERATURE TO DENSIFY SAID MIXTURE, AND REFIRING SAID MIXTURE AT A SECOND ELEVATED TEMPERATURE HIGHER THAN SAID FIRST TEMPERATURE WHILE MAINTAINING AN ISOSTATIC AIR PRESSURE ENVIRONMENT GREATER THAN THE ATMOSPHERIC PRESSURE AROUND SAID MIXTURE.
Claim 2
Independent Claim
106 words
A METHOD OF PRODUCING IMPROVED CERAMIC BODIES COMPRISING SOLID SOLUTIONS OF LEAD TITANATE AND LEAD ZIRCONATE IN WHICH THE ATOMIC RATIO OF ZR TO TI IS FROM 90:10 TO 40:60 WHICH INCLUDES PREPARING A MIXTURE OF PBO,ZRO2 AND TIO2 INREQUISITE PROPORTIONS TO PRODUCE THE SAID SOLUTIONS OF LEAD TITANATE AND LEAD ZIRCONATE, FORMING SAID MIXTURE INTO A BODY OF DESIRED SHAPE, FIRING SAID MIXTURE UNDER ATMOSPHERIC PRESSURE CONDITIONS AT A FIRST ELEVATED TEMPERATURE TO DENSIFY SAID MIXTURE, AND REFIRING SAID MIXTURE AT A SECOND ELEVATED TEMPERATURE HIGHER THAN SAID FIRST TEMPERATURE WHILE MAINTAINING AN ISOSTATIC AIR PRESSURE ENVIRONMENT GREATER THAN THE ATMOSPHERIC PRESSURE AROUND SAID MIXTURE.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |