Patent US4472481A successfully refreshed from Google Patents.
US4472481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet fiber blends
Assignee: Solutia Inc
•
Filing: 1983-11-16
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Granted: 1984-09-18
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Expires: 2003-11-16
Abstract
Abstract A blend of crimped trilobal carpet fibers, each having a modification ratio and denier within specified ranges are provided. Carpets made from the fiber blend have an excellent overall balance of firmness, cover and luster.
Inventors
- 👤 Rupert J. Snooks, Jr.
- 👤 William D. Weatherford
- 👤 James R. Nicholson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:40
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/445; D10; D10B; D10B2503/00; D10B2503/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2909; Y10T428/2913; Y10T428/2922; Y10T428/2973
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 words
A blend of fibers comprising (a) 70-90% by weight of crimped trilobal polyamide fibers each having a modification ratio ranging from 3.0 to 3.4 and a denier ranging from 16 to 24 and (b) 10-30% by weight of crimped trilobal polyamide fibers each having a modification ratio ranging from 1.7 to 2.4 and a denier ranging from 6 to 12.
Claim 2
Dependent Claim
60 words
A blend of fibers comprising (a) 70-90% by weight of crimped trilobal polyamide fibers each having a modification ratio ranging from 3.0 to 3.4 and a denier ranging from 16 to 24 and (b) 10-30% by weight of crimped trilobal polyamide fibers each having a modification ratio ranging from 1.7 to 2.4 and a denier ranging from 6 to 12.
Claim 3
Dependent Claim
20 words
The blend of claim 1 wherein the blend comprises 80% by weight of (a) and 20% by weight of (b).
Claim 4
Dependent Claim
19 words
The blend of claim 2 wherein the modification ratio of (a) is 3.2 and that of (b) is 1.8.
Claim 5
Dependent Claim
18 words
The blend of claim 3, wherein the denier of (a) is 16 and that of (b) is 12.
Claim 6
Dependent Claim
11 words
The blend of claim 1 wherein said polyamide is nylon 66.
Claim 7
Dependent Claim
11 words
The blend of claim 4 wherein said polyamide is nylon 66.
Claim 8
Dependent Claim
14 words
The blend of claim 1 wherein said fibers are in the form of yarn.
Claim 9
Dependent Claim
11 words
The yarn of claim 7 wherein said fibers are continuous filaments.
Claim 10
Dependent Claim
11 words
The yarn of claim 7 wherein said fibers are staple fibers.
Claim 11
Dependent Claim
14 words
The blend of claim 1 in the form of a collection of staple fibers.
Claim 12
Dependent Claim
14 words
The blend of claim 1 in the form of a bale of staple fibers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |