US2779772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Green substantive dyes of the anthraquinone series
Assignee: Saul and Co
•
Filing: 1952-10-06
•
Granted: 1957-01-29
•
Expires: 1972-10-06
Abstract
No abstract record available.
Inventors
- 👤 Frey Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:01
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A GREEN SUBSTANTIVE DYE OBTAINED BY CONDENSING IN MOLECULAR PROPORTIONS WHICH DIFFER FROM EACH OTHER BY AT LEAST 10%, A 1-AMINOANTHRAQUINONE-2-SULFONIC ACID CORRESPONDING TO THE FORMULA WHEREIN R STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF MONO-ANDD BINUCLEAR RADICALS OF THE BENZENE SERIES, V STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL, LOWER ALKOXY AND SO3H, W STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL AND LOWER ALKOXY, X STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE, BROMINE AND SO3H, AND Y STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND CHLORINE, WITH AT LEAST ONE 1-AMINOANTHARAQUINONE-2-SULFONIC ACID DIFFERENT FROM THE FIRST ONE BUT CORRESPONDING TO THE AFORESAID FORMULA, BY TREATING THEM WITH SUCH A QUANTITY OF A DICARBOXYLIC ACID HALIDE CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
144 words
A GREEN SUBSTANTIVE DYE OBTAINED BY CONDENSING IN MOLECULAR PROPORTIONS WHICH DIFFER FROM EACH OTHER BY AT LEAST 10%, A 1-AMINOANTHRAQUINONE-2-SULFONIC ACID CORRESPONDING TO THE FORMULA WHEREIN R STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF MONO-ANDD BINUCLEAR RADICALS OF THE BENZENE SERIES, V STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL, LOWER ALKOXY AND SO3H, W STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL AND LOWER ALKOXY, X STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE, BROMINE AND SO3H, AND Y STANDS FOR A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND CHLORINE, WITH AT LEAST ONE 1-AMINOANTHARAQUINONE-2-SULFONIC ACID DIFFERENT FROM THE FIRST ONE BUT CORRESPONDING TO THE AFORESAID FORMULA, BY TREATING THEM WITH SUCH A QUANTITY OF A DICARBOXYLIC ACID HALIDE CORRESPONDING TO THE FORMULA
References Cited (Backward Citations)
US2623884A
Cited
US2228455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |