US2678259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorine production by oxidizing hydrogen chloride employing unglowed chromic oxide catalyst material
Assignee: Diamond Shamrock Corp
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Filing: 1949-08-27
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Granted: 1954-05-11
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Expires: 1969-08-27
Abstract
No abstract record available.
Inventors
- 👤 Robert G Banner
- 👤 Tom S Perrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:15
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C; C01; C01B; C01B7/00; C01B7/01; C01B7/03; C01B7/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
THE METHOD OF OXIDIZING HYDROGEN CHLORIDE TO CHLORINE AND WATER, WHICH CONSISTS OF THE STEPS OF CONTINUOSULY PASSING A GAS STREAM CONTAINING A MIXTURE OF OXYGEN AND HYDROGEN CHLORIDE OVER A BODY OF CHROMIC OXIDE PREPARED AT TEMPERATURES ABOVE 100* C. BUT NOT SUBSTANTIALLY IN EXCESS OF 400* C., SAID BODY BEING MAINTAINED DURING THE OXIDATION OF SAID HYDROGEN CHLORIDE AT A TEMPERATURE WITHIN THE RANGE OF 340* TO 480* C., AND RECOVERING THE CHLORIDE PRODUCED, THE TEMPERATURE TO WHICH THE CATALYST IS HEATED BEING CONTINUOUSLY MAINTAINED BOTH DURING PREPARATION AND USE AT BELOW 500* C.
References Cited (Backward Citations)
US2351094A
Cited
US2451870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |