US2193336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solution of alkali metal salts of phenols
Assignee: Wyeth Holdings LLC
•
Filing: 1937-07-27
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Granted: 1940-03-12
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Expires: 1957-07-27
Abstract
No abstract record available.
Inventors
- 👤 Hans Z Lecher
- 👤 Scalera Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:15
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/15; C07C37/00; C07C37/64; C07C37/66; C07C39/00; C07C39/235; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/10
Claims Analysis
Total Claims: 0
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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) | 1943-03-12 | 1943-09-11 | 1944-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-12 | 1947-09-11 | 1948-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-12 | 1951-09-11 | 1952-03-12 | $7700.00 | Window Closed / Lapsed |