US2875019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing crimped filaments
Assignee: Bridgestone Firestone Inc
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Filing: 1956-01-17
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Granted: 1959-02-24
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Expires: 1976-01-17
Abstract
No abstract record available.
Inventors
- 👤 James E Spohn
- 👤 Walter J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:40
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/22; Y; Y10; Y10S; Y10S8/00; Y10S8/04; Y10S8/10; Y10S8/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
PROCESS WHICH COMPRISES MELT-ETRUDING THERMOLASTIC OF FILAMENTS OF AN ORIENTABLE CRYSTALLIE THERMOPLWWTIC RESIN, CHILLING THE FILAMENTS WHEN FRESHLY EXTRUDED BY BLOWING AIR THEREUPON, QUENCHING SAID FILAMENTS IN A COOLING MEDIUM, SUBJECTING THE FILAMENTS TO COLD DRAWING IN THE ABSENCE OF A SURFACE-ACTIVE AGENT, APPLYING A SURFACE-ACTIVE AGENT TO THE FILAMENTS WHILE STILL UNDER TENSION AND THEREAFTER REMOVING TENSION FROM THE FILA MENTS TO PERMIT THEN TO RELAX INTO A CRIMPLED CONFIGURA TION, THE SURFACE-ACTIVE AGENT APPLIED TO THE FILAMENTS BEING A COMPOUND CONTAINING FROM 8 TO22 CARBON ATOMS COUPLED TO A HIGHLY POLAR SOLUBLIZING GROUP SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL CARBOXYLATE GROUPS, AMMONIUM CARBOXYLATE GROUPS, SULFATE HALF-ESTER GROUPS, SULFONATE GROUP PHOSPHATE PARTIAL PARTIAL ESTER GROUPS PRIMARY AMINE GROUPS, SECONDARY AMINE GROUPS, TERTIARY AMINE GROUPS AND QUANTERNARY AMINE GROUPS.
Claim 2
Dependent Claim
131 words
PROCESS WHICH COMPRISES MELT-ETRUDING THERMOLASTIC OF FILAMENTS OF AN ORIENTABLE CRYSTALLIE THERMOPLWWTIC RESIN, CHILLING THE FILAMENTS WHEN FRESHLY EXTRUDED BY BLOWING AIR THEREUPON, QUENCHING SAID FILAMENTS IN A COOLING MEDIUM, SUBJECTING THE FILAMENTS TO COLD DRAWING IN THE ABSENCE OF A SURFACE-ACTIVE AGENT, APPLYING A SURFACE-ACTIVE AGENT TO THE FILAMENTS WHILE STILL UNDER TENSION AND THEREAFTER REMOVING TENSION FROM THE FILA MENTS TO PERMIT THEN TO RELAX INTO A CRIMPLED CONFIGURA TION, THE SURFACE-ACTIVE AGENT APPLIED TO THE FILAMENTS BEING A COMPOUND CONTAINING FROM 8 TO22 CARBON ATOMS COUPLED TO A HIGHLY POLAR SOLUBLIZING GROUP SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL CARBOXYLATE GROUPS, AMMONIUM CARBOXYLATE GROUPS, SULFATE HALF-ESTER GROUPS, SULFONATE GROUP PHOSPHATE PARTIAL PARTIAL ESTER GROUPS PRIMARY AMINE GROUPS, SECONDARY AMINE GROUPS, TERTIARY AMINE GROUPS AND QUANTERNARY AMINE GROUPS.
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |