US2675889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for processing crude gases obtained on halogenating metallic ores
Assignee: Saeurefabrik Schweizerhall
•
Filing: 1950-03-22
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Granted: 1954-04-20
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Expires: 1970-03-22
Abstract
No abstract record available.
Inventors
- 👤 Frey Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:58
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1231; C22B1/00; C22B1/02; C22B1/08; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN THE PROCESSING OF HOT GASES PRODUCED BY THE CHLORINATION OF METALLIFEROUS MATERIAL IN THE PRESENCE OF CARBONACEOUS REDUCING MATERIAL AND CONTAINING AT LEAST ONE VAPORIZED NORMALLY LIQUID METAL CHLORIDE FROM THE GROUP CONSISTING OF TITANIUM AND SILICON CHLORIDES AND AT LEAST ONE VAPORIZED NORMALLY SOLID METAL CHLORIDE FROM THE GROUP CONSISTING OF FERRIC, ALUMINUM AND ZIRCONIUM CHLORIDES, THE STEPS WHICH COMPRISE, AFTER COOLING THE GASES TO A TEMPERATURE NEAR BUT ABOVE THE HIGHEST CONDENSATION TEMPERATURE OF SAID NORMALLY SOLID METAL CHLORIDE CONTENT, PASSING
Claim 2
Dependent Claim
84 words
IN THE PROCESSING OF HOT GASES PRODUCED BY THE CHLORINATION OF METALLIFEROUS MATERIAL IN THE PRESENCE OF CARBONACEOUS REDUCING MATERIAL AND CONTAINING AT LEAST ONE VAPORIZED NORMALLY LIQUID METAL CHLORIDE FROM THE GROUP CONSISTING OF TITANIUM AND SILICON CHLORIDES AND AT LEAST ONE VAPORIZED NORMALLY SOLID METAL CHLORIDE FROM THE GROUP CONSISTING OF FERRIC, ALUMINUM AND ZIRCONIUM CHLORIDES, THE STEPS WHICH COMPRISE, AFTER COOLING THE GASES TO A TEMPERATURE NEAR BUT ABOVE THE HIGHEST CONDENSATION TEMPERATURE OF SAID NORMALLY SOLID METAL CHLORIDE CONTENT, PASSING
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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) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |