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Patent US2937165A successfully refreshed from Google Patents.
US2937165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spirit soluble yellow dye
Assignee: Wyeth Holdings LLC
•
Filing: 1956-12-28
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Granted: 1960-05-17
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Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Fiess Norman William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:48
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/48; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
COORDINATED METALLIZED AZO DYES IN THE FORM OF THEIR AMINE SALTS IN WHICH THE AZO DYES ARE A MIXTURE OF
Claim 2
Dependent Claim
20 words
COORDINATED METALLIZED AZO DYES IN THE FORM OF THEIR AMINE SALTS IN WHICH THE AZO DYES ARE A MIXTURE OF
References Cited (Backward Citations)
US2038298A
Cited
US2048898A
Cited
US2023953A
Cited
US2434173A
Cited
US2628960A
Cited
US2826572A
Cited
FR1117065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |