US3012842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the level dyeing of textile materials composed of polyamide fibers which possess irregular affinity for dyestuffs
Assignee: Sandoz AG
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Filing: 1957-11-12
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Granted: 1961-12-12
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Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Aeberhardt Maurice
- 👤 Egli Hermann
- 👤 Mikula Adam
- 👤 Perrig Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:16
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/62; D06P1/621; D06P1/622; D06P1/623; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/245; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR THE LEVEL DYEING OF TEXTILE MATERIALS COMPOSED OF POLYAMIDE FIBERS WHICH POSSESS IRREGULAR AFFINITY FOR DYESTUFFS, THE SAID PROCESS CONSISTING IN THE APPLICATION OF A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF AN ACID-DYEING ACID DYESTUFF, A NEUTRAL-DYEING SAID DYESTUFF, AN ACID-DYEING CHROME DYESTUFF, A NEUTRAL-DYEING CHROME DYESTUFF, AN ACID-DYEING 1:2 METAL COMPLEX DYESTUFF AND A NEUTRAL-DYEING 1:2 METAL COMPLEX DYESTUFF IN PRESENCE OF A SULFONATED ESTER OF A HIGHER MOLECULAR UNSATABOUT 80%.
Claim 2
Dependent Claim
76 words
A PROCESS FOR THE LEVEL DYEING OF TEXTILE MATERIALS COMPOSED OF POLYAMIDE FIBERS WHICH POSSESS IRREGULAR AFFINITY FOR DYESTUFFS, THE SAID PROCESS CONSISTING IN THE APPLICATION OF A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF AN ACID-DYEING ACID DYESTUFF, A NEUTRAL-DYEING SAID DYESTUFF, AN ACID-DYEING CHROME DYESTUFF, A NEUTRAL-DYEING CHROME DYESTUFF, AN ACID-DYEING 1:2 METAL COMPLEX DYESTUFF AND A NEUTRAL-DYEING 1:2 METAL COMPLEX DYESTUFF IN PRESENCE OF A SULFONATED ESTER OF A HIGHER MOLECULAR UNSATABOUT 80%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |