US2516604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing nucleating agent and use of same in hydrolyzing titanium salt solutions in production of titanium oxide product
Assignee: Wyeth Holdings LLC
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Filing: 1946-05-31
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Granted: 1950-07-25
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Expires: 1966-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles A Tanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:24
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/053; C01G23/0532; C01G23/0534; C01P; C01P2002/00; C01P2002/02; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF PREPARING A TITANIUM SULFATE HYDROLYSIS NUCLEATING AGENT WHICH COMPRISES THE STEPS OF BOILING AN AQUEOUS SLURRY OF PURIFIED TITANIUM SULFATE HYDROLYSATE IN THE PRESENCE OF AN ALKALI METAL HYDROXIDE FOR FROM ABOUT 1 TO ABOUT 6 HOURS, FILTERING THE MIXTURE, WASHING THE EXCESS ALKALI FROM THE RESIDUE, NEUTRALIZING THE COMBINED ALKALI METAL WITH HYDROCHLORIC ACID, BUT TERMINATING THE HYDROCHLORIC ACID TREATMENT THEREOF SHORT OF CONVERSION OF ANY OF THE HYDRATED TITANIUM DIOXIDE TO TITANIUM TETRACHLORIDE, AND THEREAFTER WASHING THE ACID-TREATED MATERIAL.
Claim 2
Independent Claim
84 words
THE METHOD OF PREPARING A TITANIUM SULFATE HYDROLYSIS NUCLEATING AGENT WHICH COMPRISES THE STEPS OF BOILING AN AQUEOUS SLURRY OF PURIFIED TITANIUM SULFATE HYDROLYSATE IN THE PRESENCE OF AN ALKALI METAL HYDROXIDE FOR FROM ABOUT 1 TO ABOUT 6 HOURS, FILTERING THE MIXTURE, WASHING THE EXCESS ALKALI FROM THE RESIDUE, NEUTRALIZING THE COMBINED ALKALI METAL WITH HYDROCHLORIC ACID, BUT TERMINATING THE HYDROCHLORIC ACID TREATMENT THEREOF SHORT OF CONVERSION OF ANY OF THE HYDRATED TITANIUM DIOXIDE TO TITANIUM TETRACHLORIDE, AND THEREAFTER WASHING THE ACID-TREATED MATERIAL.
References Cited (Backward Citations)
US1922328A
Cited
US2389206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |