Patent US1382888A successfully refreshed from Google Patents.
Patent US3955919A successfully refreshed from Google Patents.
US3955919A
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US
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Dyestuff mixtures and process for dyeing polyester fiber therewith
Assignee: Mitsui Toatsu Chemicals Inc
•
Filing: 1973-04-10
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Granted: 1976-05-11
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Expires: 1993-04-10
Abstract
Abstract Mixtures of water-insoluble monoazo dyestuffs are disclosed together with the dyeing, padding or printing of polyester material therewith.
Inventors
- 👤 Fumio Fujii
- 👤 Ken Mukai
- 👤 Tetsuo Watanabe
- 👤 Hiroshi Aiga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:39
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0046; C09B67/0051; C09B29/00; C09B29/06; C09B29/08; D; D06; D06P; D06P1/00; D06P1/16; D06P1/18; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
A mixture of dyestuffs of the formulae (1)-(4) ##SPC14## wherein each constituent dyestuff is present in an amount of at least 5% by weight.
Claim 2
Dependent Claim
24 words
A mixture of dyestuffs of the formulae (1)-(4) ##SPC14## wherein each constituent dyestuff is present in an amount of at least 5% by weight.
Claim 3
Dependent Claim
19 words
A process which comprises dyeing aromatic polyester fibers with an aqueous dispersion of the dyestuff mixture of claim 1.
Claim 4
Dependent Claim
16 words
The process as claimed in claim 2, wherein a swelling agent is added to the dyebath.
Claim 5
Dependent Claim
18 words
The process as claimed in claim 2 carried out under superatmospheric pressure and at a temperature above 100°C.
Claim 6
Dependent Claim
13 words
The process as claimed in claim 2 carried out by a thermofixation method.
References Cited (Backward Citations)
US3533722A
Cited
US3621009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |