US2591543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic treatment of industrial gases
Assignee: Wild Barfield Electric Furnaces Ltd
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Filing: 1947-10-28
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Granted: 1952-04-01
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Expires: 1967-10-28
Abstract
No abstract record available.
Inventors
- 👤 Haywood Frederick Wardle
- 👤 Laidler Douglas Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:12
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01J; B01J35/00; B01J35/50; B01J35/58; C; C10; C10K; C10K1/00; C10K1/20; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/20; C23C8/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS OF REMOVING CARBON DIOXIDE AND OXYGEN FROM INDUSTRIAL GASES COMPRISING PASSING THE GAS OVER A CATALYST CONSISTING OF BARIUM CARBONATE EXTENDED WITH SUBSTANTIALLY IRON-FREE ABESTOS AT A SUITABLE TEMPERATURE IN THE REGION OF 900* C.
Claim 2
Dependent Claim
37 words
A PROCESS OF REMOVING CARBON DIOXIDE AND OXYGEN FROM INDUSTRIAL GASES COMPRISING PASSING THE GAS OVER A CATALYST CONSISTING OF BARIUM CARBONATE EXTENDED WITH SUBSTANTIALLY IRON-FREE ABESTOS AT A SUITABLE TEMPERATURE IN THE REGION OF 900* C.
References Cited (Backward Citations)
US2214926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |