US3156519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfolanyl alkyl ethers in dyeing cellulose acetate, polyvinylidine cyanide and glycol-dicarboxylic acid polymer filaments
Assignee: Celanese Corp
•
Filing: 1961-04-05
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Granted: 1964-11-10
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Expires: 1981-04-05
Abstract
No abstract record available.
Inventors
- 👤 Kallman Martin
- 👤 Salvin Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:16
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/36; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65118; D06P1/65168; D06P1/65193; D06P3/70; D06P3/72; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921; Y10S8/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE PROCESS WHICH COMPRISES IMMERSING A FILAMENTARY MATERIAL SELECTED FROM THE GROUP CONSISTING OF VINYLIDINE CYANIDE POLYMER, POLYESTER CONDENSATION PRODUCT OF A GLYCOL AND A DICARBOXYLIC ACID, CELLULOSE TRIACETATE AND SECONDARY CELLULLOSE ACETATE FILAMENTARY MATERIALS IN AN AQUEOUS DISPERSION OF A DISPERSE DYE CONTAINING ABOUT 0.1 TO 6% OF AN ALKYL SULFOLANYL ETHER PRESENT IN AN AMOUNT RANGING FROM ABOUT 2 TO 20% OF THE WEIGHT OF SAID FILAMENTARY MATERIAL.
Claim 2
Dependent Claim
70 words
THE PROCESS WHICH COMPRISES IMMERSING A FILAMENTARY MATERIAL SELECTED FROM THE GROUP CONSISTING OF VINYLIDINE CYANIDE POLYMER, POLYESTER CONDENSATION PRODUCT OF A GLYCOL AND A DICARBOXYLIC ACID, CELLULOSE TRIACETATE AND SECONDARY CELLULLOSE ACETATE FILAMENTARY MATERIALS IN AN AQUEOUS DISPERSION OF A DISPERSE DYE CONTAINING ABOUT 0.1 TO 6% OF AN ALKYL SULFOLANYL ETHER PRESENT IN AN AMOUNT RANGING FROM ABOUT 2 TO 20% OF THE WEIGHT OF SAID FILAMENTARY MATERIAL.
References Cited (Backward Citations)
US2312864A
Cited
US2360859A
Cited
US2460995A
Cited
US2881045A
Cited
US2982597A
Cited
US2880050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |