US2468600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble monoazo dye
Assignee: Wyeth Holdings LLC
•
Filing: 1945-12-29
•
Granted: 1949-04-26
•
Expires: 1965-12-29
Abstract
No abstract record available.
Inventors
- 👤 Hans Z Lecher
- 👤 Frederic H Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:31
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/10; C09B29/18; C09B29/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19527E
Cited
US1522089A
Cited
GB286274A
Cited
US1942865A
Cited
US1915461A
Cited
US1973013A
Cited
US2013723A
Cited
US2023591A
Cited
US2180297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |