US2601460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing cellulose acetate articles using a bath comprising a dispersed acetate dye, ethylene glycol monobutyl ether, and an emulsion of polymethyl vinyl ketone
Assignee: Celanese Corp
•
Filing: 1949-03-04
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Granted: 1952-06-24
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Expires: 1969-03-04
Abstract
No abstract record available.
Inventors
- 👤 Victor S Salvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:35
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/52; D06P1/5207; D06P1/5214; D06P1/90; D06P1/92; D06P1/928; D06P3/00; D06P3/34; D06P3/40; D06P3/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
PROCESS FOR THE DYEING OF MOLDED ARTICLES WHICH COMPRISES IMMERSING MOLDED ARTICLES HAVING A BASIS OF CELLULOSE ACTATE IN A DYEBATH COMPRISING A DISPERSED CELLULOSE ACETATE DYESTUFF, A SOAP, AN EMULSION OF POLYMETHYL VINYL KETONE AND THE MONOBUTYL ETHER OF ETHYLENE GLYCOL, AND MAINTAINING THE SHAPED MASSES THEREIN UNTIL DYED TO A DEPTH OF 100 TO 500 MICRONS.
Claim 2
Dependent Claim
58 words
PROCESS FOR THE DYEING OF MOLDED ARTICLES WHICH COMPRISES IMMERSING MOLDED ARTICLES HAVING A BASIS OF CELLULOSE ACTATE IN A DYEBATH COMPRISING A DISPERSED CELLULOSE ACETATE DYESTUFF, A SOAP, AN EMULSION OF POLYMETHYL VINYL KETONE AND THE MONOBUTYL ETHER OF ETHYLENE GLYCOL, AND MAINTAINING THE SHAPED MASSES THEREIN UNTIL DYED TO A DEPTH OF 100 TO 500 MICRONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |