Patent US2661375A successfully refreshed from Google Patents.
US2661375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of phenols and acyclic aldehydes
Assignee: Hercules Powder Co
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Filing: 1950-02-07
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Granted: 1953-12-01
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Expires: 1970-02-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Joshua C Conner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:13
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/08; C07C45/00; C07C45/51; C07C45/53
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
42 words
THE PROCESS OF PRODUCING A PHENOL AND AN ALIPHATIC ALDEHYDE WHICH COMPRISES CONTACTING AN A-ALKYLARYLMETHYL HYDROPEROXIDE AT A TEMPERATURE BETWEEN ABOUT 15* C. AND ABOUT 100* C. WITH AN AQUEOUS WATER-SOLUBLE ACID SOLUTION CONTAINING AT LEAST 20% BY WEIGHT OF SAID ACID.
References Cited (Backward Citations)
GB629429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |