Patent US3788805A successfully refreshed from Google Patents.
US3788805A
Expired / Lapsed
US
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Producing multicolor dyed acrylic textile containing wool with acid,direct and cationic dyes
Assignee: Japan Exlan Co Ltd
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Filing: 1971-04-23
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Granted: 1974-01-29
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Expires: 1991-04-23
Abstract
Abstract PROCESS FOR OBTAINING MULTICOLORED TEXTILE PRODUCTS BY BLENDING A BASIC GROUP-CONTAINING ACRYLIC FIBER AND WOOL, DYEING THE PRODUCT WITH A DIRECT DYE AT A PH OF 5-9 TO DYE THE ACRYLIC FIBER COMPONENT, TREATING THE ENTIRE DYED PRODUCT WITH AN ANIONIC AROMATIC POLYCONDENSATE CONTAINING DISSOCIABLE GROUPS, SUCH AS A NAPHTHALENESULFONIC ACIDFORMALDEHYDE CONDENSATE, AND THEN DYEING THE PRODUCT IN A SECOND BATH WITH AN ACID DYE AT A PH OF 2-5 TO DYE THE WOOL COMPONENT.
Inventors
- 👤 T Ookubo
- 👤 K Hashimoto
- 👤 M Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:21
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/70; D06P3/74; D06P3/02; D06P3/04; D06P3/14; D06P3/16; D06P3/82; D06P3/8204; D06P3/8271
Claims Analysis
Total Claims: 0
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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) | 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 |