Patent US2088941A successfully refreshed from Google Patents.
US2088941A
Expired / Lapsed
US
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Amino-alcohols
Assignee: Winthrop Chemical Co Inc
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Filing: 1935-06-28
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Granted: 1937-08-03
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Expires: 1955-06-28
Abstract
No abstract record available.
Inventors
- 👤 Bockmuhl Max
- 👤 Ehrhart Gustav
- 👤 Stein Leonhard
- 👤 Hallensleben Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:17
CPC Classifications
C; C07; C07C; C07C65/00; C07C65/01; C07C65/105; C07C65/11
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) | 1940-08-02 | 1941-02-01 | 1941-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-08-02 | 1945-02-01 | 1945-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-08-02 | 1949-02-01 | 1949-08-03 | $7700.00 | Window Closed / Lapsed |