US2909568A
Expired / Lapsed
US
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Methylation of hydroxyaromatic compounds
Assignee: Universal Oil Products Co
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Filing: 1957-09-05
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Granted: 1959-10-20
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Expires: 1977-09-05
Abstract
No abstract record available.
Inventors
- 👤 William K T Gleim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:46
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/001; C07C37/002; C07C37/11; C07C37/20; C07C41/00; C07C41/01; C07C41/18; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
A PROCESS FOR THE PRODUCTION OF 2,6-DIMETHOXY-4METHYL-PHENOL WHICH COMPRISES REDUCING 2,6-DIMETHOXY4-HYDROXYMETHYL-PHENOL WITH HYDROGEN AT REDUCTION CONDITIONS INCLUDING A PRESSURE OF FROM ABOUT 50 ATMOSPHERES TO ABOUT 200 ATMSPHERES AND A TEMPERATURE OF FROM 100* TO ABOUT 225* C. IN THE PRESENCE OF ALUMINA CONTAINING FROM ABOUT 0.01 WEIGHT PERCENT TO ABOUT 2.0 WEIGHT PERCENT PLATINUM, AND RECOVERING 2,6-DIMETHOXY4-METHYL-PHENOL.
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |