US2773055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yellow monoazo dyestuffs
Assignee: Novartis AG
•
Filing: 1953-02-24
•
Granted: 1956-12-04
•
Expires: 1973-02-24
Abstract
No abstract record available.
Inventors
- 👤 Hindermann Peter
- 👤 Jung Jean-Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:20
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/24; C09B29/28; C09B29/30; C09B29/34; C09B29/36; C09B29/3604; C09B29/3647; C09B29/3652; C09B29/366
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A MONOAZO DYESTUFF HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
A MONOAZO DYESTUFF HAVING THE GENERAL 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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |