US2813853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo dyestuffs and metal complex compounds thereof
Assignee: Saul and Co
•
Filing: 1955-06-27
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Granted: 1957-11-19
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Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Steinemann Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:32
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF MONOAZO DYESTUFFS AND THE CORRESPONDING COBALT-CONTAINING AND CHROMIUM-CONTAING MONOAZO DYESTUFFS, SAID MONOAZO DYESTUFFS, IN THE METAL-FREE STATE CORRESPONDING TO THE FORMULA WHEREIN X REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF A SIMPLE CARBON-TO-CARBON BOND AND A -OCH2-BRIDGE, AND R STANDS FOR A RADICAL OF THE BENZENE SERIES HAVING IN ORTHO-POSITION TO THE AZO GROUP A MEMBER SELECTED FROM THE GROUP CONSITING OF HYDROXYL AND METHOXY GROUPS.
Claim 2
Dependent Claim
76 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF MONOAZO DYESTUFFS AND THE CORRESPONDING COBALT-CONTAINING AND CHROMIUM-CONTAING MONOAZO DYESTUFFS, SAID MONOAZO DYESTUFFS, IN THE METAL-FREE STATE CORRESPONDING TO THE FORMULA WHEREIN X REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF A SIMPLE CARBON-TO-CARBON BOND AND A -OCH2-BRIDGE, AND R STANDS FOR A RADICAL OF THE BENZENE SERIES HAVING IN ORTHO-POSITION TO THE AZO GROUP A MEMBER SELECTED FROM THE GROUP CONSITING OF HYDROXYL AND METHOXY GROUPS.
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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |