Patent US3788807A successfully refreshed from Google Patents.
US3788807A
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Dyeing polyamide bonded fleece by dwelling with method complex azo dyestuffs
Assignee: Hoechst AG
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Filing: 1971-07-27
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Granted: 1974-01-29
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Expires: 1991-07-27
Abstract
Abstract PROCESS FOR THE DYEING OF TEXTILE OF POLYAMIDE FIBERS BY PADDING THE SAID FIBROUS MATERIAL WITH CERTAIN ANIONIC DYESTUFFS, PREFERABLY SELECTED 1:2-METAL-COMPLEX DYESTUFFS, SUBSEQUENTLY WINDING UP THE PADDED MATERIAL ON A BATCH AND THEN ALLOWING IT TO DWELL FOR FIXING THE DYESTUFFS.
Inventors
- 👤 H Beiertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:23
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/14; D06P3/20; D06P3/24; D06P3/241; Y; Y10; Y10S; Y10S8/00; Y10S8/907; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 0
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |