Patent US4550050A successfully refreshed from Google Patents.
US4550050A
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US
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Fiberous batt
Assignee: Fiberlok Inc
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Filing: 1984-03-21
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Granted: 1985-10-29
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Expires: 2004-03-21
Abstract
Abstract A process for producing a fiberous batt by contacting fibers with particles of a copolymer of vinyl chloride and a diester of a vinyl unsaturated dicarboxylic acid.
Inventors
- 👤 George S. Buck, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:20
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/60; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31895; Y10T428/31906; Y10T428/31935; Y10T442/00; Y10T442/20; Y10T442/2926; Y10T442/2934; Y10T442/60; Y10T442/699
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
A fibrous batt, the individual fibers of which are bonded at their intersection by melted and refrozen particles of a copolymer of vinyl chloride and a diester of vinyl unsaturated dicarboxylic acid wherein the diester is maleic acid dibutyl ester.
Claim 2
Dependent Claim
40 words
A fibrous batt, the individual fibers of which are bonded at their intersection by melted and refrozen particles of a copolymer of vinyl chloride and a diester of vinyl unsaturated dicarboxylic acid wherein the diester is maleic acid dibutyl ester.
Claim 3
Dependent Claim
113 words
A fiberous batt of high compressive strength, the individual fibers of which are bonded at their intersection by melted and refrozen particles of a copolymer of vinyl chloride and a diester of vinyl unsaturated dicarboxylic acid; wherein the fibers have a fiber denier from 1 to 22; and wherein the weight ratio of vinyl unsaturated dicarboxylic acid to vinyl chloride is 3:97 to 20:80; and wherein the weight ratio of the copolymer to the fibers is 3:97 to 35:65; and wherein the copolymer particles have a size range of 6 to 25 microns; and wherein the copolymer has a melting point of 135° to 190° C.; and wherein the diester is dibutyl maleate.
Claim 4
Dependent Claim
113 words
A fiberous batt of high compressive strength, the individual fibers of which are bonded at their intersection by melted and refrozen particles of a copolymer of vinyl chloride and a diester of vinyl unsaturated dicarboxylic acid; wherein the fibers have a fiber denier from 1 to 22; and wherein the weight ratio of vinyl unsaturated dicarboxylic acid to vinyl chloride is 3:97 to 20:80; and wherein the weight ratio of the copolymer to the fibers is 3:97 to 35:65; and wherein the copolymer particles have a size range of 6 to 25 microns; and wherein the copolymer has a melting point of 135° to 190° C.; and wherein the diester is dibutyl maleate.
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) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |