US2496993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining of rutile
Assignee: Vibrantz Corp
•
Filing: 1946-12-02
•
Granted: 1950-02-07
•
Expires: 1966-12-02
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Goda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:19
CPC Classifications
C; C03; C03C; C03C1/00; C03C1/02; C03C1/022; C01; C01G; C01G23/00; C01G23/003; C01G23/005; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C01P; C01P2006/00; C01P2006/60; C01P2006/62; C01P2006/80; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
THE PROCESS OF REFINING RUTILE WHICH COMPRISES WHILE SINTERING THE SAME IN FINELY DIVIDED FORM WITH FROM 60% TO 100% BY WEIGHT OF FINELY DIVIDED ALKALI FROM THE CLASS CONSISTING OF HYDROXIDES AND CARBONATES OF ALKALI METALS TO FORM TITANATE, ELIMINATING CHROMIUM BY THE PRESENCE OF A MINOR AMOUNT OF AN INORGANIC HALIDE TO REACT THEREWITH, WASHING THE REACTED MASS, DISSOLVING THE RESIDUE IN CONCENTRATED SULFURIC ACID AND THEN RECOVERING TIO2 FROM SUCH ACID SOLUTION BY HYDROLYSIS.
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) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |