Patent US2741532A successfully refreshed from Google Patents.
US2741532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoasox
Assignee: —
•
Filing: —
•
Granted: 1956-04-10
•
Expires: 1973-04-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:13
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/66; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS OF ETHERIFYING A CELLULOSIC TEXTILE MATERIAL CONTAINING HYDROXYL GROUPS WITH A DYE COMPOUND, COMPRISING, FORMING AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 15 TO 25% OF AN ALKALI METAL HYDROXIDE AND AT LEAST ABOUT 0.8% OF A DYE COMPOUND HAVING A SOLUBILITY OF AT LEAST ABOUT 0.8 GRAM PER 100 GRAMS OF AN AQUEOUS SODIUM HYDROXIDE SOLUTION CONTAINING 20% SODIUM HYDROXIDE, SAID DYE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
68 words
A PROCESS OF ETHERIFYING A CELLULOSIC TEXTILE MATERIAL CONTAINING HYDROXYL GROUPS WITH A DYE COMPOUND, COMPRISING, FORMING AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 15 TO 25% OF AN ALKALI METAL HYDROXIDE AND AT LEAST ABOUT 0.8% OF A DYE COMPOUND HAVING A SOLUBILITY OF AT LEAST ABOUT 0.8 GRAM PER 100 GRAMS OF AN AQUEOUS SODIUM HYDROXIDE SOLUTION CONTAINING 20% SODIUM HYDROXIDE, SAID DYE COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US1567731A
Cited
US1973478A
Cited
US1886480A
Cited
US2136377A
Cited
US2233475A
Cited
US2243213A
Cited
US2350188A
Cited
US2370537A
Cited
US2459222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |