US3445451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactive azo dyes
Assignee: CNA Holdings LLC
•
Filing: 1966-01-11
•
Granted: 1969-05-20
•
Expires: 1986-01-11
Abstract
No abstract record available.
Inventors
- 👤 Harry W Grimmel
- 👤 Jonas St Alban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:27
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/503; C09B62/507; C09B45/00; C09B45/02; C09B45/04; C09B62/515
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2670265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |