Patent US2068449A successfully refreshed from Google Patents.
Patent US3022137A successfully refreshed from Google Patents.
US3022137A
Expired / Lapsed
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Combustion of titanium tetrachloride with oxygen
Assignee: Wyeth Holdings LLC
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Filing: 1959-03-26
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Granted: 1962-02-20
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Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Earl W Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:04
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; C01P; C01P2004/00; C01P2004/51; C01P2004/60; C01P2004/61; C01P2004/62; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
45 words
A PROCESS FOR THE MANUFACTURE OF TITANIUM DIOXIDE PIGMENT, WHICH COMPRISES BURNING TITANIUM TETRACHLORIDE AND OXYGEN UPWARDLY IN A VERTICAL REACTOR HAVING A LOWER REAGENT INLET AND A PRODUCT DISCHARGE END AS A JET STREAM THROUGH A REACTION ZONE BONDED BY A FLUID WALL OF
References Cited (Backward Citations)
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Cited
US2367118A
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GB726250A
Cited
US2828187A
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US2786280A
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US2805921A
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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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |