US2400033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Estrogenic substances
Assignee: Schieffelin and Co
•
Filing: 1944-05-30
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Granted: 1946-05-07
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Expires: 1964-05-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Tallman
- 👤 Alfred H Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:13
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/69; C07C37/00; C07C37/01; C07C37/055; C07C39/00; C07C39/12; C07C39/15; C07C39/16; C07C43/00; C07C43/02; C07C43/20; C07C43/205; C07C43/2055; C07C45/72; C07C45/74
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) | 1949-05-06 | 1949-11-05 | 1950-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-05-06 | 1953-11-05 | 1954-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-05-06 | 1957-11-05 | 1958-05-07 | $7700.00 | Window Closed / Lapsed |