US3744978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beneficiation of titanium tetrachloride purification sludge solids
Assignee: PPG Industries Inc
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Filing: 1971-01-08
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Granted: 1973-07-10
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Expires: 1991-01-08
Abstract
Abstract THE PRODUCTION OF TITANIUM TETRACHLORIDE BY CHLORINATION OF TITANIFEROUS ORE IS DESCRIBED. THE SLUDGE RESULTING FROM CHEMICAL PURIFICATION OF CRUDE TITANIUM TETRACHLORIDE IS CONCENTRATED BY RECYCLING SUCH SLUDGE TO A SOLIDS SEPARATION ZONE UTILIZED TO SEPARATE SOLIDS FROM IMPURE TI- TANIUM TETRACHLORIDE CONDENSATE AND REMOVING THE COMBINED SOLIDS FROM SAID ZONE.
Inventors
- 👤 W Pefferman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:08
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1231; C01; C01G; C01G23/00; C01G23/02; C01G23/022; C01G23/024; G; G01; G01N; G01N35/00; G01N2035/00465; G01N2035/00495; G01N2035/00534; G01N2035/00544; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |