US3724997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for space-dyeing of polyester or polyamide fibres or threads
Assignee: Hoechst AG
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Filing: 1970-02-10
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Granted: 1973-04-03
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Expires: 1990-02-10
Abstract
Abstract D R A W I N G PROCESS FOR THE SPACE-DYEING OF WOUND-UP POLYESTER OR POLYAMIDE FIBERS OR THREADS BY INJECTION INTO THE BOBBINS, BEING LOCATED ON HEATED TRANSPORTING EQUIPMENT, DISPERSE DYESTUFFS AND/OR ORGANIC PIGMENT DYESTUFFS OR DISPERSED IN AN ORGANIC SOLVENT, AT A TEMPERATURE OF FROM 160* TO 230*C., AND SUBSEQUENTLY ALLOWING THE DYESTUFFS TO TAKE EFFECT UPON THE TEXTILE MATERIAL AT THE SAID TEMPERATURE DURING 15 TO 180 SECONDS TO ACHIEVE FIXATION, AND APPARATUS FOR CARRYING OUT SAID PROCESS.
Inventors
- 👤 Der Eltz H Von
- 👤 R Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:54
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/0096; C; C09; C09B; C09B19/00; C09B19/02; D06B; D06B11/00; D06B11/0009; D06B11/0013; D06P1/90; D06P1/92; D06P1/928; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/924
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |