US2490703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salts of organic dyestuffs
Assignee: GAF Chemicals Corp
•
Filing: 1946-05-01
•
Granted: 1949-12-06
•
Expires: 1966-05-01
Abstract
No abstract record available.
Inventors
- 👤 Paige John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:48
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/02; C09B69/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US931423A
Cited
US1836047A
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US1836048A
Cited
US2022678A
Cited
US2095077A
Cited
US2315870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |