US2586233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonamido alpha aroylamino derivatives of anthraquinone compounds
Assignee: BASF Schweiz AG
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Filing: 1947-07-08
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Granted: 1952-02-19
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Expires: 1967-07-08
Abstract
No abstract record available.
Inventors
- 👤 Kern Walter
- 👤 Sutter Paul
- 👤 Holbro Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:18
CPC Classifications
C; C09; C09B; C09B6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A VATTABLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF A-ARROYLAMINO-ANTHRAQUINONES, A-AROYLAMINO-DIANTHRIMIDES AND THE CORRESPONDING CARBAZOLES, A-AROYLAMINO-TRIANTHRIMIDES AND A-AROYLAMINO-ANTHRAQUIONENE ACRIDONES, WHEREIN AT LEAST ONE AROYL RADICAL IS THE RADICAL OF A BENZENE CARBOXYLIC ACID WHICH CARRIES A SULFONIC ACID AMIDE GROUP AS SUBSTITUENT IN THE BENZENE RADICAL IN A POSITION WHICH IS NOT ADJACENT TO THE CARBOXYL GROUP.
Claim 2
Dependent Claim
57 words
A VATTABLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF A-ARROYLAMINO-ANTHRAQUINONES, A-AROYLAMINO-DIANTHRIMIDES AND THE CORRESPONDING CARBAZOLES, A-AROYLAMINO-TRIANTHRIMIDES AND A-AROYLAMINO-ANTHRAQUIONENE ACRIDONES, WHEREIN AT LEAST ONE AROYL RADICAL IS THE RADICAL OF A BENZENE CARBOXYLIC ACID WHICH CARRIES A SULFONIC ACID AMIDE GROUP AS SUBSTITUENT IN THE BENZENE RADICAL IN A POSITION WHICH IS NOT ADJACENT TO THE CARBOXYL GROUP.
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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |