US2600655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromium oxide-tungsten oxide-iron oxide gel catalyst
Assignee: Wyandotte Chemicals Corp
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Filing: 1951-08-30
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Granted: 1952-06-17
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Expires: 1971-08-30
Abstract
No abstract record available.
Inventors
- 👤 Edward C Jacobs
- 👤 Lester G Lundsted
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:54
CPC Classifications
B; B01; B01J; B01J21/00; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C; C07; C07C; C07C45/00; C07C45/56; C07C45/57; C07C45/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A CHROMIX OXIDE COMPLEX CATALYST COMPOSITION CONSISTING OF A WASHED AND DRIED AQUEOUS AMMONIACAL GEL CONSISTING OF A MIXTURE OF CHROMIC OXIDE, TUNGSTEN OXIDE AND IRON OXIDE WHEREIN THESE INGREDIENTS ARE PRESENT IN THE MOL RATIOS OF 13.2- 51.0 MOLS CHROMIC OXIDE, 3.8-33.3 MOLS TUNGSTEN OXIDE AND APPROXIMATELY 1 MOL OF IRON OXIDE.
Claim 2
Dependent Claim
53 words
A CHROMIX OXIDE COMPLEX CATALYST COMPOSITION CONSISTING OF A WASHED AND DRIED AQUEOUS AMMONIACAL GEL CONSISTING OF A MIXTURE OF CHROMIC OXIDE, TUNGSTEN OXIDE AND IRON OXIDE WHEREIN THESE INGREDIENTS ARE PRESENT IN THE MOL RATIOS OF 13.2- 51.0 MOLS CHROMIC OXIDE, 3.8-33.3 MOLS TUNGSTEN OXIDE AND APPROXIMATELY 1 MOL OF IRON OXIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |