Patent US3864903A successfully refreshed from Google Patents.
US3864903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic fibrous unit which is three-dimensionally crimped and twisted
Assignee: Soko Co Ltd
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Filing: 1972-06-14
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Granted: 1975-02-11
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Expires: 1992-06-14
Abstract
Abstract A three-dimensionally crimped and twisted synthetic fibrous unit formed by a stem having a relatively large width. Branches randomly extend from the stem and have a width less than the stem width, and fine hairs randomly extend from the branches. Numerous peripherally and internally formed crevices are provided in the fibrous unit.
Inventors
- 👤 Isao Maki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:26
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10S57/00; Y10S57/907; Y10T; Y10T225/00; Y10T225/30; Y10T225/307; Y10T225/321; Y10T225/325
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
SYNTHETIC FIBROUS UNIT MADE OF A POLYOLEFIN CONSISTING OF A SINGLE STEM HAVING A PREDETERMINED CROSS-SECTIONAL WIDTH, A PLURALITY OF BRANCHES RANDOMLY FORMED INTERGRAL OF SAID STEM, AND A PLURALITY OF NUMEROUS FINE HAIRS EXTENDING AT RANDOM FROM SAID STEM AND SAID BRANCHES, THE ENTIRE CONFIGURATION OF SAID FIBROUS UNIT BEING THREE-DIMENSIONALLY CRIMPED AND TWISTED AT RANDOM, SAID BRANCHES HAVING A DECREASED CROSSSECTIONAL WIDTH AS COMPARED WITH SAID PREDETERMINED CROSSSECTIONAL WIDTH, SAID FINE HAIRS HAVING A CROSS-SECTIONAL WIDTH GREATLY DECREASED AS COMPARED WITH THE CROSS-SECTIONAL WIDTHS OF SAID STEM AND SAID BRANCHES, AND NUMEROUS CREVICES ARE FORMED PERIPHERALLY AND INTERNALLY THROUGHOUT SAID FIBROUS UNIT.
Claim 2
Dependent Claim
104 words
SYNTHETIC FIBROUS UNIT MADE OF A POLYOLEFIN CONSISTING OF A SINGLE STEM HAVING A PREDETERMINED CROSS-SECTIONAL WIDTH, A PLURALITY OF BRANCHES RANDOMLY FORMED INTERGRAL OF SAID STEM, AND A PLURALITY OF NUMEROUS FINE HAIRS EXTENDING AT RANDOM FROM SAID STEM AND SAID BRANCHES, THE ENTIRE CONFIGURATION OF SAID FIBROUS UNIT BEING THREE-DIMENSIONALLY CRIMPED AND TWISTED AT RANDOM, SAID BRANCHES HAVING A DECREASED CROSSSECTIONAL WIDTH AS COMPARED WITH SAID PREDETERMINED CROSSSECTIONAL WIDTH, SAID FINE HAIRS HAVING A CROSS-SECTIONAL WIDTH GREATLY DECREASED AS COMPARED WITH THE CROSS-SECTIONAL WIDTHS OF SAID STEM AND SAID BRANCHES, AND NUMEROUS CREVICES ARE FORMED PERIPHERALLY AND INTERNALLY THROUGHOUT SAID FIBROUS UNIT.
Claim 3
Dependent Claim
12 words
A synthetic fibrous unit according to claim 1, made from a polyethylene.
Claim 4
Dependent Claim
12 words
A synthetic fibrous unit according to claim 1, made from a polypropylene.
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |