Patent US3594112A successfully refreshed from Google Patents.
US3594112A
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US
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Dyeing,padding and printing of synthetic polyamide fibers with an anthraquinone dye
Assignee: Sandoz AG
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Filing: 1968-05-22
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Granted: 1971-07-20
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Expires: 1988-05-22
Abstract
Abstract A DYEING, PADDING AND PRINTING PROCESS FOR POLYAMIDE FIBERS WITH THE ANTHRAQUINONE DYE OF THE FORMULA 1-NH2,2-(HO3S-),4-((2-CH3,4,6-DI(C2H5-)PHENYL)- ANTHRAQUINONE
Inventors
- 👤 Jacques Guenthard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:30
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/34; C09B1/343; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924; Y10S8/933
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |