Patent US3435069A successfully refreshed from Google Patents.
US3435069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of acrolein and methacrolein with a molybdenum polyvalent metaloxygen catalyst
Assignee: Distillers Co Yeast Ltd
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Filing: 1965-10-06
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Granted: 1969-03-25
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Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 James Robert Bethell
- 👤 Edward James Gasson
- 👤 David James Hadley
- 👤 Roderick Frank Neale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:20
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A PROCESS WHICH COMPRISES REACTING IN VAPOR PHASE AT ABOUT 300-500*C. AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN TO PRODUCE THE CORRESPONDING ACID WITH MOLECULAR OXYGEN OVER AN OXIDATION CATALYST CONSISTING ESSENTIALLY OF (1) A MIXTURE OF AN OXIDE OF MOLYBDENUM AND AN OXIDE OF A POLYVALENT METAL SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF VANADIUM, IRON, CERIUM, TITANIUM, ANTIMONY, TIN, TUNGSTEN AND BISMUTH OR (2) A COMPOUND OF MOLYBDENUM, OXYGEN AND SAID POLYVALENT METAL; THE ATOMIC RATIN OF POLYVALENT METAL TO MOLYBDENUM BEING FROM 20:1 TO 1:6.5; THE PERCENTAGE OF FEED SUBSTANCE IN THE REACTANT FEED BEING FROM 1 TO 20% BY VOLUME, THE REACTANT FEED CONTAINING FROM 1 TO 20% BY VOLUME OF OXYGEN, AND THE CONTACT TIME BEING FROM 1 TO 30 SECONDS.
Claim 2
Dependent Claim
132 words
A PROCESS WHICH COMPRISES REACTING IN VAPOR PHASE AT ABOUT 300-500*C. AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN TO PRODUCE THE CORRESPONDING ACID WITH MOLECULAR OXYGEN OVER AN OXIDATION CATALYST CONSISTING ESSENTIALLY OF (1) A MIXTURE OF AN OXIDE OF MOLYBDENUM AND AN OXIDE OF A POLYVALENT METAL SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF VANADIUM, IRON, CERIUM, TITANIUM, ANTIMONY, TIN, TUNGSTEN AND BISMUTH OR (2) A COMPOUND OF MOLYBDENUM, OXYGEN AND SAID POLYVALENT METAL; THE ATOMIC RATIN OF POLYVALENT METAL TO MOLYBDENUM BEING FROM 20:1 TO 1:6.5; THE PERCENTAGE OF FEED SUBSTANCE IN THE REACTANT FEED BEING FROM 1 TO 20% BY VOLUME, THE REACTANT FEED CONTAINING FROM 1 TO 20% BY VOLUME OF OXYGEN, AND THE CONTACT TIME BEING FROM 1 TO 30 SECONDS.
References Cited (Backward Citations)
US3087964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |