US2749207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoxchi
Assignee: —
•
Filing: —
•
Granted: 1956-06-05
•
Expires: 1973-06-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:51
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/645; D06P1/38; D06P1/673; D06P1/67333; D06P1/6735; D06P3/00; D06P3/58; D06P3/60; D06P3/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
PROCESS FOR COLORING CELLULOSIC TEXILE MATERIALS WITH METALLIFEROUS AZO-DYESTUFFS SPARINGLY SOLUBLE IN WATER, WHICH COMPRISES APPLYING TO SAID MATERIALS A NEUTRAL TO ALKALINE AQUEOUS DYESTUFF COMPOSITION WHICH CONTAINS A DYESTUFF CONTAINING AT LEAST TWO AZO LINKAGES AND BEING CAPABLE OF FORMING METAL COMPOUNDS SPARINGLY SOLUBLE IN WATER, AND ALIPHATIC AMINE CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
54 words
PROCESS FOR COLORING CELLULOSIC TEXILE MATERIALS WITH METALLIFEROUS AZO-DYESTUFFS SPARINGLY SOLUBLE IN WATER, WHICH COMPRISES APPLYING TO SAID MATERIALS A NEUTRAL TO ALKALINE AQUEOUS DYESTUFF COMPOSITION WHICH CONTAINS A DYESTUFF CONTAINING AT LEAST TWO AZO LINKAGES AND BEING CAPABLE OF FORMING METAL COMPOUNDS SPARINGLY SOLUBLE IN WATER, AND ALIPHATIC AMINE CORRESPONDING TO THE 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) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |