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US2429600A
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Chromable monoazo pyrazolone dye
Assignee: Imperial Chemical Industries Ltd
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Filing: 1943-08-25
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Granted: 1947-10-28
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Expires: 1963-08-25
Abstract
No abstract record available.
Inventors
- 👤 Beech Walter Francis
- 👤 Mendoza Mordecai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:22
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)
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US2060563A
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FR779126A
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US2009611A
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DE650766C
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CH189049A
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CH189048A
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DE652869C
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GB444820A
Cited
CH187603A
Cited
US2195784A
Cited
US2155001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-27 | 1951-04-28 | 1951-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-27 | 1955-04-28 | 1955-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-27 | 1959-04-28 | 1959-10-28 | $7700.00 | Window Closed / Lapsed |