US2476525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trinuclear cyanine dyes
Assignee: GAF Chemicals Corp
•
Filing: 1946-08-15
•
Granted: 1949-07-19
•
Expires: 1966-08-15
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Anish
- 👤 Charles A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:40
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/0075; C09B23/16; C09B23/162; C09B23/164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2185798A
Cited
US2191810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |