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US2426577A
Expired / Lapsed
US
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Oil soluble colors of the anthraquinone series
Assignee: Wyeth Holdings LLC
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Filing: 1945-10-12
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Granted: 1947-08-26
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Expires: 1965-10-12
Abstract
No abstract record available.
Inventors
- 👤 Scalera Mario
- 👤 William B Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:07
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/28; C09B1/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE144634C
Cited
US2205191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-25 | 1951-02-24 | 1951-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-25 | 1955-02-24 | 1955-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-25 | 1959-02-24 | 1959-08-26 | $7700.00 | Window Closed / Lapsed |