US2982773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acylated alpha: alpha-dihydroxy-diaminoanthraquinones
Assignee: BASF Schweiz AG
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Filing: 1958-09-09
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Granted: 1961-05-02
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Expires: 1978-09-09
Abstract
No abstract record available.
Inventors
- 👤 Grossmann Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:25
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/16; D06P1/20; C; C09; C09B; C09B1/00; C09B1/50; C09B1/51; C09B1/516; D06P5/00; D06P5/20; D06P5/2044; D06P5/2055; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN ACYLATED A:A-DIHYDROXY-DIAMINOANTHRAQUINONE WHICH CONSISTS OF A SINGLE ANTHRAQUINONE NUCLEUS IN WHICH EACH OF THE OUTER SIX-MEMBERED RINGS CONTAINS ONE OF THE AMINO AND ONE OF THE HYDROXYL GROUPS, AND IN WHICH ONE OF THE AMINO GROUPS IS ACYLATED BY THE RADICAL OF AN ALIPHATIC MONOCARBOXYLIC ACID, AND THE OTHER AMINO GROUP IS ACYLATED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE RADICALS OF FORMIC ACID, OF A CARBONIC ACID MONO-ALKYL ESTER AND OF AN ALIPHATIC MONOCARBOXYLIC ACID HAVING FROM 3 TO 8 CARBON ATOMS.
Claim 2
Dependent Claim
87 words
AN ACYLATED A:A-DIHYDROXY-DIAMINOANTHRAQUINONE WHICH CONSISTS OF A SINGLE ANTHRAQUINONE NUCLEUS IN WHICH EACH OF THE OUTER SIX-MEMBERED RINGS CONTAINS ONE OF THE AMINO AND ONE OF THE HYDROXYL GROUPS, AND IN WHICH ONE OF THE AMINO GROUPS IS ACYLATED BY THE RADICAL OF AN ALIPHATIC MONOCARBOXYLIC ACID, AND THE OTHER AMINO GROUP IS ACYLATED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE RADICALS OF FORMIC ACID, OF A CARBONIC ACID MONO-ALKYL ESTER AND OF AN ALIPHATIC MONOCARBOXYLIC ACID HAVING FROM 3 TO 8 CARBON ATOMS.
References Cited (Backward Citations)
GB445192A
Cited
US2090948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |