US2676191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dealkylation of 2,5-tert. alkylphenol compounds
Assignee: Universal Oil Products Co
•
Filing: 1949-11-25
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Granted: 1954-04-20
•
Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 James R Hoatson
- 👤 Robert H Rosenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:16
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A PROCESS FOR THE SELECTIVE DEALKYLATION OF A PHENOLIC COMPOUND HAVING THE EMPIRICAL FORMULA:
Claim 2
Dependent Claim
14 words
A PROCESS FOR THE SELECTIVE DEALKYLATION OF A PHENOLIC COMPOUND HAVING THE EMPIRICAL FORMULA:
References Cited (Backward Citations)
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US2222632A
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US2290602A
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US2290603A
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US2327938A
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US2435038A
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US2470902A
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US2514960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |