US2788293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for sizing acrylic yarns
Assignee: NAT STARCH PRODUCTS Inc
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Filing: 1954-03-15
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Granted: 1957-04-09
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Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Carlyle G Caldwell
- 👤 Otto B Wurzburg
- 👤 Louis D Fitzgerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:01
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/51; D06M11/55; D06M11/56; D06M11/07; D06M11/11; D06M11/20; D06M15/00; D06M15/01; D06M15/03; D06M15/11; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
THE PROCESS FOR WRAP SIZING POLYACRYLIC YARNS TO CONDITION THE SAME FOR WEAVING WHICH COMPRISES SUBJECTING THE YARN TO THE CONJOINT ACTION OF A STARCH SIZE AND A METALLIC SALT SOLUTION IN WHICH THE METALLIC SALT IS SELECTED FROM THE GROUP CONSISTING OF STANNIC, STANNOUS, CERIC, CHROMIC, CHROMOUS, BISMUTH AND CUPROUS SALTS.
Claim 2
Dependent Claim
52 words
THE PROCESS FOR WRAP SIZING POLYACRYLIC YARNS TO CONDITION THE SAME FOR WEAVING WHICH COMPRISES SUBJECTING THE YARN TO THE CONJOINT ACTION OF A STARCH SIZE AND A METALLIC SALT SOLUTION IN WHICH THE METALLIC SALT IS SELECTED FROM THE GROUP CONSISTING OF STANNIC, STANNOUS, CERIC, CHROMIC, CHROMOUS, BISMUTH AND CUPROUS SALTS.
References Cited (Backward Citations)
US2256474A
Cited
US2132527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |