Patent EP0230658A2 successfully refreshed from Google Patents.
US2076484A
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US
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Green monoazo dyestuffs and a process for their manufacture
Assignee: FIRM CHEMICAL WORKS FORMERLY S
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Filing: 1934-02-23
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Granted: 1937-04-06
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Expires: 1954-02-23
Abstract
No abstract record available.
Inventors
- 👤 Senn Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:29
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16
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) | 1940-04-05 | 1940-10-05 | 1941-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-05 | 1944-10-05 | 1945-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-05 | 1948-10-05 | 1949-04-06 | $7700.00 | Window Closed / Lapsed |