US2883373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble azo colour salts
Assignee: Novartis AG
•
Filing: 1956-01-23
•
Granted: 1959-04-21
•
Expires: 1976-01-23
Abstract
No abstract record available.
Inventors
- 👤 Bossard Werner
- 👤 Voltz Jacques
- 👤 Favre Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:38
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
5 words
A DYESTUFF OF THE FORMULA
References Cited (Backward Citations)
CH136921A
Cited
US2135293A
Cited
US2432419A
Cited
US2569418A
Cited
US2675375A
Cited
US2744105A
Cited
US2768158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |