US3491083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo dyestuffs for polyamide fibers containing a thiophenedioxide group
Assignee: Aziende Colori Nazionali Affini ACNA SpA
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Filing: 1967-01-10
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Granted: 1970-01-20
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Expires: 1987-01-10
Abstract
No abstract record available.
Inventors
- 👤 Angelo Mangini
- 👤 Antonio Tundo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:54
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/343; C07; C07F; C07F5/00; C07F5/02; C07F5/027; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |