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US2544756A
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Fe2o3-cr2o3-cuo hydrogenation catalyst
Assignee: Union Carbide Corp
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Filing: 1944-08-07
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Granted: 1951-03-13
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Expires: 1964-08-07
Abstract
No abstract record available.
Inventors
- 👤 Howard R Guest
- 👤 Raymond W Mcnamee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:08
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C07C29/145; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A MIXED OXIDES HYDROGENATION CATALYST CONSISTING ESSENTIALLY OF THE OXIDES OF IRON, COPPER AND CHROMIUM, SAID IRON AND COPPER BEING PRESENT IN A RATIO OF ABOUT 71 TO 109 PARTS OF COPPER AND ABOUT 8 TO 17 PARTS OF CHROMIUM PER 100 PARTS OF IRON. COMPUTED ON A METAL BASIS BY WEIGHT.
Claim 2
Dependent Claim
52 words
A MIXED OXIDES HYDROGENATION CATALYST CONSISTING ESSENTIALLY OF THE OXIDES OF IRON, COPPER AND CHROMIUM, SAID IRON AND COPPER BEING PRESENT IN A RATIO OF ABOUT 71 TO 109 PARTS OF COPPER AND ABOUT 8 TO 17 PARTS OF CHROMIUM PER 100 PARTS OF IRON. COMPUTED ON A METAL BASIS BY WEIGHT.
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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) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |