US3331829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disazo dyestuffs insoluble in water
Assignee: Kuhlmann SA
•
Filing: 1963-11-19
•
Granted: 1967-07-18
•
Expires: 1983-11-19
Abstract
No abstract record available.
Inventors
- 👤 Jirou Marcel Georges
- 👤 Leroy Jean Marie Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:15
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; C09B31/06; C09B31/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3071571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |