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Patent US3582275A successfully refreshed from Google Patents.
US3582275A
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Process for the preparation of titanium oxide
Assignee: Mizusawa Industrial Chemicals Ltd
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Filing: 1968-05-21
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Granted: 1971-06-01
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Expires: 1988-05-21
Abstract
Abstract A PROCESS FOR THE PREPARATION OF TITANIUM OXIDE, ESPECIALLY TITANIUM OXIDE OF RUTILE TYPE, WHICH COMPRISES MIXING A TITANIUM SALT OF PHOSPHORUS OXOACID WITH AT LEAST AN EQUIVALENT QUANTITY, TO THE PHOSPHORUS OXOACID COMPONENT IN THE SALT, OF AT LEAST ONE PHOSPHORUS OXOACIDBINDER SELECTED FROM THE GROUP CONSISTING OF OXIDES, HYDROXIDES, AND SALTS CAPABLE OF PRODUCING OXIDES UNDER THE SUBSEQUENT DRYING OR CALCINING CONDITIONS, OF ALKALI METALS, ALKALINE EARTH METALS, ALUMINIUM AND ZINC, AND THEREAFTER DRYING OR CALCINING THE MIXTURE.
Inventors
- 👤 Yujiro Sugahara
- 👤 Hiroyuki Naito
- 👤 Kouichi Usui
- 👤 Akira Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:58
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/08; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3615; C09C1/363; C01P; C01P2002/00; C01P2002/70; C01P2002/72; C01P2002/80; C01P2002/84; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |