US3245751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile fibers having improved dyeability and method of preparing same
Assignee: Montedison SpA
•
Filing: 1963-05-20
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Granted: 1966-04-12
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Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Bonvicini Alberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:42
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/79; D01; D01F; D01F6/00; D01F6/02; D01F6/04; D01F6/06; D06P1/00; D06P1/44; D06P1/52; D06P1/5207; D06P1/5214; D06P1/5228; D06P5/00; D06P5/22; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF IMPROVING THE DYE RECEPTIVITY AND DYE FASTNESS OF FIBERS OBTAINED BY MOLTEN MASS EXTGRUSION OF A MIXTURE OF A POLYOLEFIN AND A BSIC NITROGEN COMPOUND, THIS METHOD COMPRISING TREATING SAID FIBERS WITH A SOLUTION CONTAINING POLYVINYL ALCOHOL AND AN ALDEHYDE FOR A TIME OF FROM ABOUT 2-3 SECONDS TO 24 HOURS AT A TEMPERATURE OF FROM ABOUT ROOM TEMPERATURE TO THE BOILING POINT OF THE SOLVENT FOR SAID POLYVINVYL ALCOHOL AND ALDEHYDE.
Claim 2
Independent Claim
75 words
A METHOD OF IMPROVING THE DYE RECEPTIVITY AND DYE FASTNESS OF FIBERS OBTAINED BY MOLTEN MASS EXTGRUSION OF A MIXTURE OF A POLYOLEFIN AND A BSIC NITROGEN COMPOUND, THIS METHOD COMPRISING TREATING SAID FIBERS WITH A SOLUTION CONTAINING POLYVINYL ALCOHOL AND AN ALDEHYDE FOR A TIME OF FROM ABOUT 2-3 SECONDS TO 24 HOURS AT A TEMPERATURE OF FROM ABOUT ROOM TEMPERATURE TO THE BOILING POINT OF THE SOLVENT FOR SAID POLYVINVYL ALCOHOL AND ALDEHYDE.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |