US2697672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casein-copolymeric styrene-maleic anhydride type compositions for and method of sizing textile warp yarns
Assignee: Monsanto Chemicals Ltd
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Filing: 1951-02-16
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Granted: 1954-12-21
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Expires: 1971-02-16
Abstract
No abstract record available.
Inventors
- 👤 Elmer H Rossin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:00
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
A METHOD OF SIZING TEXTILE WARP YARNS WHICH COMPRISES APPLYING TO SAID YARNS A HOMOGENEOUS COMPOSITION CONSISTING ESSENTIALLY OF AN ALKALINE AQUEOUS SOLUTION OF CASEIN AND A WATER-SOLUBLE ALKALI METAL SALT OF A COPOLYMER OF (1) A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF STYRENE AND SUBSTITUTED STYRENE AND (2) A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF MALEIC ANHYDRIDE, ALKYL HALF ESTERS OF MALEIC ACID, IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 3 CARBON ATOMS, AND MIXTURES OF SAID ANHYDRIDE AND HALF ESTERS, SAID CASEIN AND SAID ALKALI METAL SALT OF THE COPOLYMER BEING PRESENT IN THE SOLUTION IN A WEIGHT OF RATIO BETWEEN 70:30 AND 30:70, SAID COMPOSITION BEING AT A TEMPERATURE OF 120 TO 180* F., REMOVING SAID YARNS FROM SAID COMPOSITIONS AND DRYING THE YARNS.
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) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |