US2724657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing the breaking strength of staple fibers
Assignee: Individual
•
Filing: 1952-12-16
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Granted: 1955-11-22
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Expires: 1972-12-16
Abstract
No abstract record available.
Inventors
- 👤 Basil G Skalkeas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:42
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/77; D06M11/79; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR INCREASING THE BREAKING STRENGTH OF STRANDS OF STAPLE FIBERS COMPRISING: IMPREGNATING A TWISTED STRAND OF STAPLE TEXTILE FIBER WITH A COLLOIDAL AQUEOUS DISPERSION OF SILICA, SUBJECTING THE WET STRAND TO A TENSION INTERMEDIATE BETWEEN THE NORMAL TENSION USED IN CONVENTIONAL TEXTILE STRAND PROCESSING PROCEDURES AND THE BREAKING TENSION OF THE STRAND, AND DRYING THE SO-TREATED STRAND UNDER TENSION.
Claim 2
Dependent Claim
61 words
A PROCESS FOR INCREASING THE BREAKING STRENGTH OF STRANDS OF STAPLE FIBERS COMPRISING: IMPREGNATING A TWISTED STRAND OF STAPLE TEXTILE FIBER WITH A COLLOIDAL AQUEOUS DISPERSION OF SILICA, SUBJECTING THE WET STRAND TO A TENSION INTERMEDIATE BETWEEN THE NORMAL TENSION USED IN CONVENTIONAL TEXTILE STRAND PROCESSING PROCEDURES AND THE BREAKING TENSION OF THE STRAND, AND DRYING THE SO-TREATED STRAND UNDER TENSION.
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) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |