US2619474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrous alumina catalyst support
Assignee: ExxonMobil Oil Corp
•
Filing: 1950-11-28
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Granted: 1952-11-25
•
Expires: 1970-11-28
Abstract
No abstract record available.
Inventors
- 👤 Carlos L Gutzeit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:45
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN IMPROVED CATALYST SUPPORTED SELECTED FROM THE GROUP CONSISTING OF (1) ALUMINA OBTAINED BY THE PROCESS WHICH COMPRISES EFFECTING THE PRECIPITATION OF HYDROUS ALUMINUM OXIDE IN THE PRESENCE OF AN ANION SELECTED FROM THE GROUP CONSISTING OF CYANIDE, CYANATE AND THIOCYANATE IONS, IN AMOUNTS VARYING BETWEEN ABOUT 0.25 GRAM ION AND ABOUT 2.0 GRAM IONS PER GRAM MOLECULAR WEIGHT OF ALUMINA, AND (2) ALUMINA OBTAINED BY THE PROCESS WHICH COMPRISES EFFECTING THE PRECIPITATION OF HYDROUS ALUMINUM OXIDE AND THEREAFTER CONTACTING THE PRECIPITATED HYDROUS ALUMINUM OXIDE, WITHIN ABOUT TWO HOURS AFTER SAID PRECIPITATION, WITH AN ANION SELECTED FROM THE GROUP CONSISTING OF CYANIDE, CYANATE AND THIOCYANATE IONS, IN AMOUNT VARYING BETWEEN ABOUT 0.25 GRAM ION AND ABOUT 2.0 GRAM IONS PER GRAM MOLECULAR WEIGHT OF ALUMINA.
Claim 2
Dependent Claim
125 words
AN IMPROVED CATALYST SUPPORTED SELECTED FROM THE GROUP CONSISTING OF (1) ALUMINA OBTAINED BY THE PROCESS WHICH COMPRISES EFFECTING THE PRECIPITATION OF HYDROUS ALUMINUM OXIDE IN THE PRESENCE OF AN ANION SELECTED FROM THE GROUP CONSISTING OF CYANIDE, CYANATE AND THIOCYANATE IONS, IN AMOUNTS VARYING BETWEEN ABOUT 0.25 GRAM ION AND ABOUT 2.0 GRAM IONS PER GRAM MOLECULAR WEIGHT OF ALUMINA, AND (2) ALUMINA OBTAINED BY THE PROCESS WHICH COMPRISES EFFECTING THE PRECIPITATION OF HYDROUS ALUMINUM OXIDE AND THEREAFTER CONTACTING THE PRECIPITATED HYDROUS ALUMINUM OXIDE, WITHIN ABOUT TWO HOURS AFTER SAID PRECIPITATION, WITH AN ANION SELECTED FROM THE GROUP CONSISTING OF CYANIDE, CYANATE AND THIOCYANATE IONS, IN AMOUNT VARYING BETWEEN ABOUT 0.25 GRAM ION AND ABOUT 2.0 GRAM IONS PER GRAM MOLECULAR WEIGHT OF ALUMINA.
References Cited (Backward Citations)
US2419186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |