US4649078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antimicrobials impregnated into fibers
Assignee: ATK Launch Systems LLC
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Filing: 1986-03-21
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Granted: 1987-03-10
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Expires: 2006-03-21
Abstract
Abstract A lower temperature technique for incorporating antimicrobial agents into fibers following the melt step in fiber manufacturing processes results in several advantages when contrasted with incorporation during the molten state.
Inventors
- 👤 Thomas C. McEntee
- 👤 Lawrence J. Guilbault
- 👤 James F. Brophy
- 👤 Judith L. Koob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:00
CPC Classifications
D; D06; D06M; D06M16/00; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2971
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
90 words
A product comprising a fiber containing an effective amount of an antimicrobial agent to provide protection against microbial attack of said fiber; said antimicrobial agent being added to said fiber while the fiber is a solid and resulting in said antimicrobial agent being present in an essentially homogeneous cross-sectional distribution throughout said fiber and further characterized by the presence of a greater amount of active antimicrobial agent than if an equal total amount of said agent had been incorporated into said fiber when said fiber was in the molten condition.
Claim 2
Dependent Claim
90 words
A product comprising a fiber containing an effective amount of an antimicrobial agent to provide protection against microbial attack of said fiber; said antimicrobial agent being added to said fiber while the fiber is a solid and resulting in said antimicrobial agent being present in an essentially homogeneous cross-sectional distribution throughout said fiber and further characterized by the presence of a greater amount of active antimicrobial agent than if an equal total amount of said agent had been incorporated into said fiber when said fiber was in the molten condition.
Claim 3
Dependent Claim
18 words
The product of claim 1, wherein: said antimicrobial agent is unstable at the melting point of said fiber.
Claim 4
Dependent Claim
12 words
The product of claim 2, wherein: said antimicrobial agent is bis(tri-n-butyl tin)oxide.
Claim 5
Dependent Claim
11 words
The product of claim 1, wherein: said antimicrobial agent is 10,10'-oxybisphenoxarsine.
Claim 6
Dependent Claim
10 words
The product of claim 4, wherein: said fiber is nylon.
Claim 7
Dependent Claim
18 words
The product of claim 5, wherein: said product contains from about 10 ppm to 3300 ppm of 10,10'-oxybisphenoxarsine.
Claim 8
Dependent Claim
18 words
The product of claim 6, wherein: said product contains from about 250 ppm to 500 ppm of 10,10'-oxybisphenoxarsine.
Claim 9
Dependent Claim
10 words
The product of claim 1, wherein: said fiber is nylon.
Claim 10
Dependent Claim
42 words
The product of claim 1, wherein: said antimicrobial agent is a member of the group consisting of phenoxarsines, phenarsazines, maleimides, isoindole dicarboximides having a sulfur atom bonded to the nitrogen atom of the dicarboximide group, halogenated aryl alkanols, isothazolinones, and organotin compounds.
Claim 11
Dependent Claim
10 words
The product of claim 9, wherein: said fiber is nylon.
Claim 12
Dependent Claim
11 words
The product of claim 1, wherein: said antimicrobial agent is n-(2-methylnaphthyl)maleimide.
Claim 13
Dependent Claim
11 words
The product of claim 1, wherein: said antimicrobial agent is bis-n-[(1,1,2,2-tetrachloroethyl)]-4-cyclohexene-1,2-dicarboximide.
Claim 14
Dependent Claim
11 words
The product of claim 1, wherein: said antimicrobial agent is n-trichloromethylthio-4-cyclohexene-1,2-dicarboximide.
Claim 15
Dependent Claim
12 words
The product of claim 1, wherein: said antimicrobial agent is n-trichloromethylthio phthalimide.
Claim 16
Dependent Claim
12 words
The product of claim 1, wherein: said antimicrobial agent is 2,4-dichlorobenzyl alcohol.
Claim 17
Dependent Claim
11 words
The product of claim 1, wherein: said antimicrobial agent is 2-(n-octyl-4-isothiazolin-3-one.
Claim 18
Dependent Claim
11 words
The product of claim 1, wherein: said antimicrobial agent is bis(tri-n-butyltin)oxide.
References Cited (Backward Citations)
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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) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |