Patent US3552906A successfully refreshed from Google Patents.
US3552906A
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Process for dyeing and printing linear polyester fibers and said dyed fibers
Assignee: BASF Schweiz AG
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Filing: 1968-01-03
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Granted: 1971-01-05
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Expires: 1988-01-03
Abstract
Abstract LINEAR POLYESTER FIBERS DYED AND PROCESS FOR DYEING OR PRINTING LINEAR POLYESTER FIBERS WITH A WATER INSOLUBLE AZO DYESTUFF OF THE FORMULA A-N=N-B-N(-R1)-R2 IN WHICH A REPRESENTS A THIAZOLE, BENZTHIAZOLE OR THIADIAZOLE RADICAL BOUND IN THE 2-POSITION TO THE AZO GROUP OR A BENZENE RADICAL WHICH MBY BE SUBSTITUTED, R1 DENOTES AN ALKYL GROUP WHICH MAY BE SUBSTITUTED AND R2 DENOTES A RESIDUE OF THE FORMULA-ALKYLENE-OCOR3, IN WHICH R3 REPRESENTS A RESIDUE WHICH CONTAINS A NITROGEN-CONTAINING 6-MEMBERED RING.
Inventors
- 👤 Visvanathan Ramanathan
- 👤 Richard Peter
- 👤 Hans-Joerg Angliker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:59
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/18; C09B43/20; C09B43/204; C09B29/00; C09B29/06; C09B29/08; C09B29/0805; C09B29/0807; C09B29/0809; C09B29/0811; C09B29/0823; D; D06; D06P; D06P1/00; D06P1/16; D06P1/18; D06P3/00; D06P3/34; D06P3/52; D06P3/56; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921; Y10S8/922
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |