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 09:05
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)
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Cited
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Cited
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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 |