US3365489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated aliphatic acids
Assignee: Distillers Co Yeast Ltd
•
Filing: 1965-05-26
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Granted: 1968-01-23
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Expires: 1985-05-26
Abstract
No abstract record available.
Inventors
- 👤 Bethell James Robert
- 👤 Hadley David James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:49
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J27/00; B01J27/02; B01J27/057; B01J27/0576; B01J37/00; B01J37/0009; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR THE PRODUCTION OF AN UNSATURATED ALIPHATIC ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID WHICH COMPRISES REACTING AT AN ELEVATED TEMPERATURE IN THE VAPOUR PHASE A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACROLEIN, METHACROLEIN OR THE CORRESPONDING OLEFINS WITH A MOLECULAR OXYGEN-CONTAINING GAS OVER A CATALYTIC COMPOSITION CONTAINING COBALT, MOLYBDENUM AND OXYGEN PREPARED BY ADDING A NITROGENOUS BASE TO AN AQUEOUS COMPOSITION OF A COBALT SALT AND MOLYBDIC ACID OR A MOLYBDATE OF A NITROGENOUS BASE TO OBTAIN A SOLUTION OF PH LESS THAN ABOUT 7 AND SUBJECTING THE RESULTING PRECIPITATE TO A HEAT TREATMENT.
Claim 2
Dependent Claim
103 words
A PROCESS FOR THE PRODUCTION OF AN UNSATURATED ALIPHATIC ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID WHICH COMPRISES REACTING AT AN ELEVATED TEMPERATURE IN THE VAPOUR PHASE A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACROLEIN, METHACROLEIN OR THE CORRESPONDING OLEFINS WITH A MOLECULAR OXYGEN-CONTAINING GAS OVER A CATALYTIC COMPOSITION CONTAINING COBALT, MOLYBDENUM AND OXYGEN PREPARED BY ADDING A NITROGENOUS BASE TO AN AQUEOUS COMPOSITION OF A COBALT SALT AND MOLYBDIC ACID OR A MOLYBDATE OF A NITROGENOUS BASE TO OBTAIN A SOLUTION OF PH LESS THAN ABOUT 7 AND SUBJECTING THE RESULTING PRECIPITATE TO A HEAT TREATMENT.
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) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |