Patent US3617174A successfully refreshed from Google Patents.
US3617174A
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Process for dyeing and printing synthetic fibers with tetra-{60 -substituted anthraquinone
Assignee: Bayer AG
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Filing: 1969-07-22
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Granted: 1971-11-02
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Expires: 1989-07-22
Abstract
Abstract An improved process for dyeing linear polyesters wherein quinizarin dyestuffs having anilino, substituted anilino or benzylamino substituents in the 5-position and the 8-position or, alternatively, having phenyl mercapto or substituted phenyl mercapto substituents in the 8-position.
Inventors
- 👤 Walter Hohmann
- 👤 Heinrich Vollman
- 👤 Hans-Samuel Bien
- 👤 Gunter Gehrke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:39
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/52; H03C1/54; H03C1/56; H03C1/58; C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/36; C09B1/50; C09B1/56; C09B1/58; C09B31/00; C09B31/02; C09B31/08; D; D06; D06P; D06P1/00; D06P1/16; D06P1/20; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921; Y10S8/922; Y10S8/924
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
11 words
The process of claim 1 wherein the dyestuff has the formula
Claim 2
Dependent Claim
11 words
The process of claim 1 wherein the dyestuff has the formula
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein the dyestuff has the formula
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein the dyestuff has the formula
Claim 5
Dependent Claim
10 words
Linear polyester fiber materials dyed by the process of claim
References Cited (Backward Citations)
BE609673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |