US3417144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel oxidation processes
Assignee: Gulf Oil Corp
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Filing: 1966-12-19
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Granted: 1968-12-17
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Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 Roger P Cahoy
- 👤 Donald M Coyne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:13
CPC Classifications
B; B01; B01J; B01J27/00; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J27/14; B01J27/186; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR MANUFACTURING METHACROLEIN BY CONTACTING A GASEOUS STREAM OF ISOBUTYLENE AND FROM ABOUT 5 TO 0.5 MOLES OF OXYGEN PER MOLE OF ISOBUTYLENE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 350* TO 650*C. FOR A PERIOD OF ABOUT 0.1 TO 20 SECONDS WITH AN OXIDATION CATALYST PREPARED BY COATING A SUPPORT SELECTED FROM SILICA, ALUMINA AND SILICON CARBIDE WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE CHROMIUM COMPOUND WHICH IS CAPABLE OF THERMAL DECOMPOSITION TO CHROMIUM OXIDE AND A COMPOUND SELECTED FROM PHOSPHOMOLYBDIC ACID, SILICOMOLYBDIC ACID, AMMONIUM PHOSPHOVANADATE AND PHSOPHOTUNGSTIC ACID, DRYING AND HEATING TO ABOUT 1000*C. TO PRODUCE A MIXED OXIDE CATALYST COMPOSITION WHICH CONTAINS FROM ABOUT 5 TO 15 ATOMS OF CHROMIUM FOR EVERY 12 ATOMS OF A METALLIC ELEMENT SELECTED FROM MOLYBDENUM, VANADIUM AND TUNGSTEN.
Claim 2
Dependent Claim
130 words
A PROCESS FOR MANUFACTURING METHACROLEIN BY CONTACTING A GASEOUS STREAM OF ISOBUTYLENE AND FROM ABOUT 5 TO 0.5 MOLES OF OXYGEN PER MOLE OF ISOBUTYLENE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 350* TO 650*C. FOR A PERIOD OF ABOUT 0.1 TO 20 SECONDS WITH AN OXIDATION CATALYST PREPARED BY COATING A SUPPORT SELECTED FROM SILICA, ALUMINA AND SILICON CARBIDE WITH AN AQUEOUS SOLUTION OF A WATER-SOLUBLE CHROMIUM COMPOUND WHICH IS CAPABLE OF THERMAL DECOMPOSITION TO CHROMIUM OXIDE AND A COMPOUND SELECTED FROM PHOSPHOMOLYBDIC ACID, SILICOMOLYBDIC ACID, AMMONIUM PHOSPHOVANADATE AND PHSOPHOTUNGSTIC ACID, DRYING AND HEATING TO ABOUT 1000*C. TO PRODUCE A MIXED OXIDE CATALYST COMPOSITION WHICH CONTAINS FROM ABOUT 5 TO 15 ATOMS OF CHROMIUM FOR EVERY 12 ATOMS OF A METALLIC ELEMENT SELECTED FROM MOLYBDENUM, VANADIUM AND TUNGSTEN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |