Patent US2810763A successfully refreshed from Google Patents.
US2810763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl-substituted acroleins
Assignee: Distillers Co Yeast Ltd
•
Filing: 1950-03-13
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Granted: 1957-10-22
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Expires: 1970-03-13
Abstract
No abstract record available.
Inventors
- 👤 Hadley David James
- 👤 Hall Reginald Harold
- 👤 Jacobs David Lan Hutchinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:39
CPC Classifications
C; C07; C07C; C07C57/00; C07C57/02; C07C57/03; C07C51/00; C07C51/16; C07C51/21; C07C51/23; C07C51/235
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE MANUFACTURE OF ALPHA-NEOPENTYL ACROLEIN AND ALPHA-METHYL BETA-TERTIARY-BUTYLACROLEIN WHICH COMPRISES REACTING DI-ISOBUTENE IN THE VAPOUR PHASE AT ELEVATED TEMPERATURES IN THE RANGE BETWEEN 200 AND 400*C. WITH MOLECULAR OXYGEN IN THE PRESENCE IN THE REACTION ZONE OF ELEMENTARY SELENIUM AND A SOLID OXIDATION CATALYST SELECTED FROM THE GROUP CONSISTING OC COPPER, AN OXIDE OF COPPER, COPPER CHLORIDE, SULPHATE, ALUMINATE, CHROMITE, CHROMATE, MOLYBDATE, TUNGSTATE AND VANADATE.
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE MANUFACTURE OF ALPHA-NEOPENTYL ACROLEIN AND ALPHA-METHYL BETA-TERTIARY-BUTYLACROLEIN WHICH COMPRISES REACTING DI-ISOBUTENE IN THE VAPOUR PHASE AT ELEVATED TEMPERATURES IN THE RANGE BETWEEN 200 AND 400*C. WITH MOLECULAR OXYGEN IN THE PRESENCE IN THE REACTION ZONE OF ELEMENTARY SELENIUM AND A SOLID OXIDATION CATALYST SELECTED FROM THE GROUP CONSISTING OC COPPER, AN OXIDE OF COPPER, COPPER CHLORIDE, SULPHATE, ALUMINATE, CHROMITE, CHROMATE, MOLYBDATE, TUNGSTATE AND VANADATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |