US2468172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromable azo dyestuffs
Assignee: Novartis AG
•
Filing: 1945-09-10
•
Granted: 1949-04-26
•
Expires: 1965-09-10
Abstract
No abstract record available.
Inventors
- 👤 Conzetti Achille
- 👤 Schetty Guido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:58
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1994116A
Cited
US2038942A
Cited
US2054057A
Cited
US2268936A
Cited
US2317733A
Cited
US2359730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |