US3089909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated aliphatic aldehydes
Assignee: Distillers Co Yeast Ltd
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Filing: 1960-01-25
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Granted: 1963-05-14
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Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 Barclay John Lynn
- 👤 Hadley David James
- 👤 Stewart David Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:29
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/30; B01J23/31; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6527; B01J23/66; B01J23/68; B01J23/683; B01J23/687; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE PROCESS FOR THE PRODUCTION OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN WHICH COMPRISES REACTING IN THE VAPOR PHASE AT ABOUT 300-500*C. A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF PROPYLENE AND ISOBUTENE WITH OXYGEN IN THE PRESENCE OF AN INTER GASEOUS DILUENT OVER AN OXIDATION CATALYST SELECTED FROM THE GROUP CONSISTING OF TIN TUNGSTATE, SILVER TUNGSTATE, AND BISMUTH TUNGSTATE, THE MOLAR RATIO OF TUNGSTEN TO THE OTHER METALLIC ELEMENTS BEING WITHIN THE RANGE OF 0.3:1 TO 3:1.
Claim 2
Dependent Claim
83 words
THE PROCESS FOR THE PRODUCTION OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN WHICH COMPRISES REACTING IN THE VAPOR PHASE AT ABOUT 300-500*C. A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF PROPYLENE AND ISOBUTENE WITH OXYGEN IN THE PRESENCE OF AN INTER GASEOUS DILUENT OVER AN OXIDATION CATALYST SELECTED FROM THE GROUP CONSISTING OF TIN TUNGSTATE, SILVER TUNGSTATE, AND BISMUTH TUNGSTATE, THE MOLAR RATIO OF TUNGSTEN TO THE OTHER METALLIC ELEMENTS BEING WITHIN THE RANGE OF 0.3:1 TO 3:1.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |