US4401712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antimicrobial non-woven fabric
Assignee: Microban Products Co
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Filing: 1983-01-03
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Granted: 1983-08-30
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Expires: 2003-01-03
Abstract
Abstract An antimicrobial agent is incorporated into the binder of a non-woven fabric where it resides in colloidal suspension within the amorphous zones of the polymer. Thus incorporated it migrates to the surface of the binder and onto the fibers of the non-woven fabric to inhibit the growth of bacteria and fungi.
Inventors
- 👤 Willard L. Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:47
CPC Classifications
D; D06; D06M; D06M23/00; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D06M16/00; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T442/00; Y10T442/20; Y10T442/2525
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
A non-woven fabric comprising: (a) a web of textile fibers formed according to the wetlaid process or the drylaid process; (b) a polymeric base binding agent selected from the group containing acrylics, polyvinyl acetates, vinyl acetate-ethylenes, and styrene-butadine latexes; and (c) said binding agent having a minor amount of an antimicrobial agent incorporated therein, said antimicrobial agent being non-cross-linked with binding agent, residing in cooloidal suspension within the amorphous zones of said polymeric base binding agent available to migrate to the surface of the binding agent and onto the textile fibers until the internal reservoir is exhausted.
Claim 2
Dependent Claim
97 words
A non-woven fabric comprising: (a) a web of textile fibers formed according to the wetlaid process or the drylaid process; (b) a polymeric base binding agent selected from the group containing acrylics, polyvinyl acetates, vinyl acetate-ethylenes, and styrene-butadine latexes; and (c) said binding agent having a minor amount of an antimicrobial agent incorporated therein, said antimicrobial agent being non-cross-linked with binding agent, residing in cooloidal suspension within the amorphous zones of said polymeric base binding agent available to migrate to the surface of the binding agent and onto the textile fibers until the internal reservoir is exhausted.
Claim 3
Dependent Claim
30 words
The non-woven fabric according to claim 1 wherein said agent is selected from the group consisting of compounds containing halogenated aromatic nitriles; a salt of imazalil sulphate; 3,5,3',4'-tetrachlorosalicylanilide; and hexachlorophene.
Claim 4
Dependent Claim
22 words
The non-woven fabric according to claim 2 wherein said antimicrobial agent comprises a combination of two or more of said antimicrobial agents.
References Cited (Backward Citations)
US4111922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |