US3091646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of mu-cresol by a dealkylation process
Assignee: Beazer East Inc
•
Filing: 1960-04-18
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Granted: 1963-05-28
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Expires: 1980-04-18
Abstract
No abstract record available.
Inventors
- 👤 Leston Gerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:48
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF MAKING M-CRESOL COMPRISING HEATING A 4,6-DI-T-ALKYL-M-CRESOL AT A TEMPERATURE OF 150*-275*C., IN THE PRESENCE OF A CATALTIC AMOUNT OF AN ALUMINUM ARYLOXIDE SELECTED FROM THE GROUP CONSISTING OF PHENOXIDE AND LOWER ALKYL PHENOXIDE, UNTIL ABOUT TWO MOLES OF ISOOLEFIN PER MOLE OF 4,6-DI-T-ALKYL-M-CRESOL ARE EVOLVED, AND RECOVERING M-CRESOL FROM THE REACTION MIXTURE.
Claim 2
Independent Claim
55 words
A METHOD OF MAKING M-CRESOL COMPRISING HEATING A 4,6-DI-T-ALKYL-M-CRESOL AT A TEMPERATURE OF 150*-275*C., IN THE PRESENCE OF A CATALTIC AMOUNT OF AN ALUMINUM ARYLOXIDE SELECTED FROM THE GROUP CONSISTING OF PHENOXIDE AND LOWER ALKYL PHENOXIDE, UNTIL ABOUT TWO MOLES OF ISOOLEFIN PER MOLE OF 4,6-DI-T-ALKYL-M-CRESOL ARE EVOLVED, AND RECOVERING M-CRESOL FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
US2297588A
Cited
US2831898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |