US2128202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing compounds of azoproteins with antimony
Assignee: Winthrop Chemical Co Inc
•
Filing: 1936-08-18
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Granted: 1938-08-23
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Expires: 1956-08-18
Abstract
No abstract record available.
Inventors
- 👤 Bockmuhl Max
- 👤 Ludwig Willy
- 👤 Mutzenbecher Paul Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:37
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/90; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/829; Y10S530/83; Y10S534/00; Y10S534/01
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) | 1941-08-22 | 1942-02-21 | 1942-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-08-22 | 1946-02-21 | 1946-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-08-22 | 1950-02-21 | 1950-08-23 | $7700.00 | Window Closed / Lapsed |