US2705708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disazo dyestuffs
Assignee: Novartis AG
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Filing: 1952-06-27
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Granted: 1955-04-05
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Expires: 1972-06-27
Abstract
No abstract record available.
Inventors
- 👤 Keller Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:05
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; C09B31/025
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
THE DYESTUFF OF THE FORMULA:
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) | 1958-04-04 | 1958-10-04 | 1959-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-04 | 1962-10-04 | 1963-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-04 | 1966-10-04 | 1967-04-05 | $7700.00 | Window Closed / Lapsed |