US3352632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of lead titanate and lead zirconate for ceramic bodies
Assignee: Panasonic Holdings Corp
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Filing: 1964-03-16
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Granted: 1967-11-14
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Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 Sasaki Hiromu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:52
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/50; C01; C01G; C01G21/00; C01G23/00; C01G23/003; C01G25/00; C01G25/006; C04B35/01; C04B35/46; C04B35/48; C04B35/51; C01P; C01P2004/00; C01P2004/60; C01P2004/62; Y; Y10; Y10T; Y10T24/00; Y10T24/15
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
84 words
A PROCESS FOR MAKING FINELY DIVIDED COMPOUND POWDER OF PHMO2, WHEREIN M REPRESENTS AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, WHICH COMPRISES SYNTHESIZING A DOUBLE OXALATE OF PHMO(C2O4)2-NH2O BY MEANS OF CHEMICAL REACTION IN AQUEOUS SOLUTION OF A NITRATE OF M, A WATER-SOLUBLE LEAD SALT, AND OXALIC ACID, FILTERING AND DRYING SAID DOUBLE OXALATE, DECOMPOSING SAID DOUBLE OXALATE BY HEATING AT AN ELEVATED TEMPERATURE WITH LIBERATION OF WATER VAPOR AND OTHER GAS, AND RECOVERING THE THEREBY-PRODUCED POWDERED PBMO3.
Claim 2
Dependent Claim
84 words
A PROCESS FOR MAKING FINELY DIVIDED COMPOUND POWDER OF PHMO2, WHEREIN M REPRESENTS AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, WHICH COMPRISES SYNTHESIZING A DOUBLE OXALATE OF PHMO(C2O4)2-NH2O BY MEANS OF CHEMICAL REACTION IN AQUEOUS SOLUTION OF A NITRATE OF M, A WATER-SOLUBLE LEAD SALT, AND OXALIC ACID, FILTERING AND DRYING SAID DOUBLE OXALATE, DECOMPOSING SAID DOUBLE OXALATE BY HEATING AT AN ELEVATED TEMPERATURE WITH LIBERATION OF WATER VAPOR AND OTHER GAS, AND RECOVERING THE THEREBY-PRODUCED POWDERED PBMO3.
Claim 3
Dependent Claim
73 words
A PROCESS FOR MAKING PB(TI,ZR)O2 AS A FINELY DIVIDED POWDER WHICH COMPRISES SYNTHESIZING A DOUBLE OXALATE OF PH(TIZR)O(C2O4)2-NH2O BY REACTION IN AQUEOUS SOLUTION OF A WATER-SOLUBLE LEAD SALT, OXALIC ACID, AND NITRATES OF TITANIUM AND ZIRCONIUM, FILTERING AND DRYING SAID DOUBLE OXALATE, AND CONVERTING THE DOUBLE OXALATE INTO FINELY DIVIDED PH(TIZR)O3 POWDER BY HEATING THE SAID OXALATE AT AN ELEVATED TEMPERATURE TO DECOMPOSE THE SAME WITH EVOLUTION OF WATER VAPOR AND OTHER GASES.
Claim 4
Dependent Claim
73 words
A PROCESS FOR MAKING PB(TI,ZR)O2 AS A FINELY DIVIDED POWDER WHICH COMPRISES SYNTHESIZING A DOUBLE OXALATE OF PH(TIZR)O(C2O4)2-NH2O BY REACTION IN AQUEOUS SOLUTION OF A WATER-SOLUBLE LEAD SALT, OXALIC ACID, AND NITRATES OF TITANIUM AND ZIRCONIUM, FILTERING AND DRYING SAID DOUBLE OXALATE, AND CONVERTING THE DOUBLE OXALATE INTO FINELY DIVIDED PH(TIZR)O3 POWDER BY HEATING THE SAID OXALATE AT AN ELEVATED TEMPERATURE TO DECOMPOSE THE SAME WITH EVOLUTION OF WATER VAPOR AND OTHER GASES.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |