US2424627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monazo and disazo dyes with n-substituted 1, 3, 5 xylidines
Assignee: Acordis UK Ltd
•
Filing: 1942-07-08
•
Granted: 1947-07-29
•
Expires: 1962-07-08
Abstract
No abstract record available.
Inventors
- 👤 Olpin Henry Charles
- 👤 Wright John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:01
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; C09B31/04; C09B31/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2037909A
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US2086031A
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US2131894A
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US2173417A
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US2069836A
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US2082156A
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US2289413A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |