US2530735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of titanium halides
Assignee: EIDP Inc
•
Filing: 1946-04-12
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Granted: 1950-11-21
•
Expires: 1966-04-12
Abstract
No abstract record available.
Inventors
- 👤 Schaumann Holger Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:41
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1231; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S159/00; Y10S159/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A METHOD FOR PURIFYING LIQUID TICL4 TO EFFECT SUBSTANTIALLY COMPLETE REMOVAL OF VANADIUM PRESENT THEREIN AS AN IMPURITY, COMPRISING HEATING SAID LIQUID TO EFFECT DISTILLATION THEREOF, PASSING THE RESULTING VAPORS IN THE DRY STATE THROUGH A DISTILLATION COLUMN AND IN DIRECT CONTACT WITH A MASS OF DISCRETE COPPER PARTICLES MAINTAINED IN SAID COLUMN AS A CONTACT MASS, AND PERIODICALLY REACTIVATING SAID COPPER CONTACT MASS THROUGH DIRECT TREATMENT WITH A NON-OXIDIZING SOLUTION OF AN ACID.
Claim 2
Independent Claim
74 words
A METHOD FOR PURIFYING LIQUID TICL4 TO EFFECT SUBSTANTIALLY COMPLETE REMOVAL OF VANADIUM PRESENT THEREIN AS AN IMPURITY, COMPRISING HEATING SAID LIQUID TO EFFECT DISTILLATION THEREOF, PASSING THE RESULTING VAPORS IN THE DRY STATE THROUGH A DISTILLATION COLUMN AND IN DIRECT CONTACT WITH A MASS OF DISCRETE COPPER PARTICLES MAINTAINED IN SAID COLUMN AS A CONTACT MASS, AND PERIODICALLY REACTIVATING SAID COPPER CONTACT MASS THROUGH DIRECT TREATMENT WITH A NON-OXIDIZING SOLUTION OF AN ACID.
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) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |