US3514261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing carbon dioxide and hydrogen from carbon monoxide and steam using mixed oxides of copper,zinc and chromium as catalyst and process for producing said catalyst
Assignee: Imperial Chemical Industries Ltd
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Filing: 1968-06-03
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Granted: 1970-05-26
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Expires: 1988-06-03
Abstract
No abstract record available.
Inventors
- 👤 George Walter Bridger
- 👤 David Owen Hughes
- 👤 Philip William Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; C01B32/00; C01B32/40; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/1512; C07C29/1516; C07C29/1518; C07C29/153; C07C29/154; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2697730A
Cited
US1746781A
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US1797426A
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US1809978A
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US1959313A
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GB636800A
Cited
US3074783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |