Patent US3307884A successfully refreshed from Google Patents.
Patent US3043646A successfully refreshed from Google Patents.
US3043646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing of artificial fibers
Assignee: Sandoz AG
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Filing: 1959-03-16
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Granted: 1962-07-10
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Expires: 1979-03-16
Abstract
No abstract record available.
Inventors
- 👤 Buecheler Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:26
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/50; C09B1/503; D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/26; D06P3/34; D06P3/36; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921; Y10S8/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A DYEING PROCESS COMPRISING APPLYING TO AN ARTIFICIAL FIBER MATERIAL SELECTED FROM THE GROUP CONSISTING OF SECONDARY CELLULOSE ACETATE, CELLULOSE TRIACETATE, AND POLYETHYLENE TEREPHTHALATE FIBERS, FROM AN AQUEOUS DISPERSION, A MEMBER SELECTED FROM THE GROUP CONSISTING OF A SINGLE ANTHRAQUINONE DYESTUFF AND A MIXTURE OF ANTHRAQUINONE DYESTUFFS OF THE FORMULA
Claim 2
Dependent Claim
50 words
A DYEING PROCESS COMPRISING APPLYING TO AN ARTIFICIAL FIBER MATERIAL SELECTED FROM THE GROUP CONSISTING OF SECONDARY CELLULOSE ACETATE, CELLULOSE TRIACETATE, AND POLYETHYLENE TEREPHTHALATE FIBERS, FROM AN AQUEOUS DISPERSION, A MEMBER SELECTED FROM THE GROUP CONSISTING OF A SINGLE ANTHRAQUINONE DYESTUFF AND A MIXTURE OF ANTHRAQUINONE DYESTUFFS OF 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) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |