US2541003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reacting salts of phenols with halo-alkanoic acid compounds
Assignee: Wyeth Holdings LLC
•
Filing: 1948-08-17
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Granted: 1951-02-06
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Expires: 1968-08-17
Abstract
No abstract record available.
Inventors
- 👤 Harold M Day
- 👤 Margaret H Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:56
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07C; C07C59/00; C07C59/40; C07C59/58; C07C59/64; C07C59/66; C07C59/68; C07C59/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2158064A
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US2252666A
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US2370256A
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US2375885A
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US2322761A
Cited
US2375138A
Cited
GB573476A
Cited
GB573510A
Cited
GB592827A
Cited
US2444594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |