Patent US2524422A successfully refreshed from Google Patents.
US2524422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing organic acids
Assignee: Wyeth Holdings LLC
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Filing: 1948-01-14
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Granted: 1950-10-03
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Expires: 1968-01-14
Abstract
No abstract record available.
Inventors
- 👤 James H Boothe
- 👤 Robert B Angier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:11
CPC Classifications
C; C07; C07K; C07K1/00; C07K1/02; C07K1/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A METHOD OF PREPARING COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 2
Independent Claim
9 words
A METHOD OF PREPARING COMPOUNDS HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |