US3280193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic production of methacrolein from isobutene
Assignee: Imperial Chemical Industries Ltd
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Filing: 1963-10-14
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Granted: 1966-10-18
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Whim Bernard Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:09
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8876; B01J23/882; B01J23/885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE PRODUCTION OF METHACROLEIN WHICH COMPRISES REACTING ISOBUTENE WITH OXYGEN IN THE VAPOUR PHASE AT A TEMPERATURE BETWEEN 230*C. AND 570*C. IN THE PRESENCE OF A COPPER SILICO-MOLYBDATE AS CATALYST AND FOR A CONTACT TIME BETWEEN 0.1 AND 10 SECONDS, THE RATIO OF OXYGEN TO ISOBUTENE BEING IN THE RANGE OF 1 TO 10 PARTS BY VOLUME OF OXYGEN FOR EACH PART BY VOLUME OF ISOBUTENE.
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE PRODUCTION OF METHACROLEIN WHICH COMPRISES REACTING ISOBUTENE WITH OXYGEN IN THE VAPOUR PHASE AT A TEMPERATURE BETWEEN 230*C. AND 570*C. IN THE PRESENCE OF A COPPER SILICO-MOLYBDATE AS CATALYST AND FOR A CONTACT TIME BETWEEN 0.1 AND 10 SECONDS, THE RATIO OF OXYGEN TO ISOBUTENE BEING IN THE RANGE OF 1 TO 10 PARTS BY VOLUME OF OXYGEN FOR EACH PART BY VOLUME OF ISOBUTENE.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |