US2090201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bismuth salts of carboxylic acids
Assignee: Winthrop Chemical Co Inc
•
Filing: 1935-04-17
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Granted: 1937-08-17
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Expires: 1955-04-17
Abstract
No abstract record available.
Inventors
- 👤 Herrmann Walter
- 👤 Hampe Friedrich
- 👤 Persch Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:08
CPC Classifications
C; C07; C07C; C07C65/00; C07C65/01; C07C65/03; C07C65/05; C07C65/10; C07C61/00; C07C61/12; C07C61/125; C07C61/13; C07F; C07F9/00; C07F9/94
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) | 1940-08-16 | 1941-02-15 | 1941-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-08-16 | 1945-02-15 | 1945-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-08-16 | 1949-02-15 | 1949-08-17 | $7700.00 | Window Closed / Lapsed |