US2697732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
O-dealkylation process
Assignee: Universal Oil Products Co
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Filing: 1952-02-28
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Granted: 1954-12-21
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Expires: 1972-02-28
Abstract
No abstract record available.
Inventors
- 👤 Julian M Mavity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:21
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/055; C07C41/00; C07C41/01; C07C41/18; C07C41/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
A PROCESS FOR CONVERTING P-DIMETHOXYBENZENE TO PMETHOXYPHENOL WHICH COMPRISES SUBJECTING SAID P-DIMETHOXYBENZENE TO REACTION WITH AN ORGANIC ACID IN THE PRESENCE OF AN ACID CATALYST AT A TEMPERATURE OF FROM ABOUT ATMOSPHERIC TO ABOUT 300* F.
References Cited (Backward Citations)
US2100228A
Cited
US2551737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |