US2592021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for purifying normally liquid chlorides of metals of group 4 of the periodic system
Assignee: Saeurefabrik Schweizerhall
•
Filing: 1948-07-14
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Granted: 1952-04-08
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Expires: 1968-07-14
Abstract
No abstract record available.
Inventors
- 👤 Frey Walter
- 👤 Boller Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:11
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1231; C01; C01B; C01B33/00; C01B33/08; C01B33/107; C01B33/10778; C01B9/00; C01B9/02; C01G; C01G1/00; C01G1/06; C01G19/00; C01G19/04; C01G19/08; C01G21/00; C01G21/16; C01G23/00; C01G23/02; C01G23/022; C01G23/024; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS FOR REMOVING COLORING IMPURITIES FROM AN IMPURE NORMALLY LIQUID CHLORIDE OF A METAL OF GROUP 4 OF THE PERIODIC SYSTEM WHICH COMPRISES INTERMIXING SAID CHLORIDE AND A SMALL PROPORTION OF AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS AND COMPOUNDS OF CARBON, HYDROGEN AND AT LEAST ONE SUBSTITUENT FROM THE GROUP CONSISTING OF HYDROXY, OXY, KETO, AMINO AND CARBOXYL RADICALS, HEATING SAID ORGANIC COMPOUND IN A LIQUID BODY OF SAID CHLORIDE AT A TEMPERATURE BETWEEN 100* AND 500* C. AT WHICH SAID COMPOUND CARBONIZES THEREIN UNTIL A FINELY DISPERSED CARBONIZATION PRODUCT IS FORMED AND UNTIL SAID IMPURITIES ARE TAKEN UP BY SAID CARBONIZATION PRODUCT, AND SEPARATING PURIFIED METAL CHLORIDE FROM SAID CARBONIZATION PRODUCT HOLDING SAID IMPURITIES.
Claim 2
Dependent Claim
120 words
A PROCESS FOR REMOVING COLORING IMPURITIES FROM AN IMPURE NORMALLY LIQUID CHLORIDE OF A METAL OF GROUP 4 OF THE PERIODIC SYSTEM WHICH COMPRISES INTERMIXING SAID CHLORIDE AND A SMALL PROPORTION OF AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS AND COMPOUNDS OF CARBON, HYDROGEN AND AT LEAST ONE SUBSTITUENT FROM THE GROUP CONSISTING OF HYDROXY, OXY, KETO, AMINO AND CARBOXYL RADICALS, HEATING SAID ORGANIC COMPOUND IN A LIQUID BODY OF SAID CHLORIDE AT A TEMPERATURE BETWEEN 100* AND 500* C. AT WHICH SAID COMPOUND CARBONIZES THEREIN UNTIL A FINELY DISPERSED CARBONIZATION PRODUCT IS FORMED AND UNTIL SAID IMPURITIES ARE TAKEN UP BY SAID CARBONIZATION PRODUCT, AND SEPARATING PURIFIED METAL CHLORIDE FROM SAID CARBONIZATION PRODUCT HOLDING SAID IMPURITIES.
References Cited (Backward Citations)
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US2415958A
Cited
US2370525A
Cited
US2412349A
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US2396458A
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US2416191A
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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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |