Patent US5156843A successfully refreshed from Google Patents.
US5156843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric impregnated with functional substances for controlled release
Assignee: Amcol International Corp
•
Filing: 1989-03-20
•
Granted: 1992-10-20
•
Expires: 2009-03-20
Abstract
Abstract Intersticed materials, including woven and nonwoven fabrics, open-cellular materials and the like, are impregnated with functional substances by incorporating the substances in microscopic porous particles in which the pores form an interconnected network open to the particles in the interstices of the materials. The functional substances thus impart useful properties to the material in a controlled release manner.
Inventors
- 👤 Helen C. Leong
- 👤 Martin Katz
- 👤 Chung-Heng Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:31
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/14; A61K9/16; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8105; A61K8/8117; A01; A01N; A01N25/00; A01N25/18; A01N25/34; A61K8/02; A61K8/0208; A61K8/8141; A61K8/8152; A61K9/1605; A61K9/1629; A61K9/1635; A61K9/70; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/425; A61L15/44; A61L15/46; A61L27/00; A61L27/50; A61L27/54; A61Q; A61Q19/00; A61L2300/00; A61L2300/60; A61L2300/602; Y; Y10; Y10S; Y10S428/00; Y10S428/905; Y10S428/907; Y10S428/911; Y10S428/913; Y10T; Y10T442/00; Y10T442/20; Y10T442/2311; Y10T442/2525; Y10T442/2533; Y10T442/2541; Y10T442/2631
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
78 words
A composition of matter comprising a material provided with interstices having a solid particles residing therein, said material being a member selected from the group consisting of joined fibers, woven fabric, non-woven fabric, paper, woven cloth, non-woven cloth, foamed plastic and sponge, said solid particles being from about one to about 100 microns in diameter and containing a substantially continuous network of pores open to the exterior of said particles, with a functional substance retained in said pores.
Claim 2
Dependent Claim
78 words
A composition of matter comprising a material provided with interstices having a solid particles residing therein, said material being a member selected from the group consisting of joined fibers, woven fabric, non-woven fabric, paper, woven cloth, non-woven cloth, foamed plastic and sponge, said solid particles being from about one to about 100 microns in diameter and containing a substantially continuous network of pores open to the exterior of said particles, with a functional substance retained in said pores.
Claim 3
Dependent Claim
17 words
A composition of matter in accordance with claim 1 in which said solid particles are substantially noncompressible.
Claim 4
Dependent Claim
19 words
A composition of matter in accordance with claim 1 in which said functional substance is an outwardly diffusible substance.
Claim 5
Dependent Claim
18 words
A composition of matter in accordance with claim 1 in which said functional substance is a low-melting solid.
Claim 6
Dependent Claim
17 words
A composition of matter in accordance with claim 1 in which said functional substance is a liquid.
Claim 7
Dependent Claim
18 words
A composition of matter in accordance with claim 1 in which said functional substance is a volatile liquid.
Claim 8
Dependent Claim
19 words
A composition of matter in accordance with claim 1 in which said functional substance is a substantially nonvolatile liquid.
Claim 9
Dependent Claim
19 words
A composition of matter in accordance with claim 1 in which said functional substance is a biologically active substance.
Claim 10
Dependent Claim
39 words
A composition of matter in accordance with claim 1 in which said functional substance is a biologically active substance selected from the group consisting of antiseptics, antibiotics, antifungals, anti-infectives, anesthetics pesticides spermicides, corticosteroids, vitamins, mildew retardants and antiacne agents.
Claim 11
Dependent Claim
28 words
A composition of matter in accordance with claim 1 in which said functional substance is a member selected from the group consisting of emollients, lubricants, moisturizers and sunscreens.
Claim 12
Dependent Claim
27 words
A composition of matter in accordance with claim 1 in which said functional substance is a member selected from the group consisting of deodorants and fragrance-bearing liquids.
Claim 13
Dependent Claim
29 words
A composition of matter in accordance with claim 1 in which said functional substance is a member selected from the group consisting of cleaning agents, disinfectants, polishes and waxes.
Claim 14
Dependent Claim
27 words
A composition of matter in accordance with claim 1 in which said solid particles have a total pore volume of about 0.1 cc/g to about 2.0 cc/g.
Claim 15
Dependent Claim
30 words
A composition of matter in accordance with claim 1 in which said solid particles have a surface area of about 1 m 2 /g to about 400 m 2 /g.
Claim 16
Dependent Claim
26 words
A composition of matter in accordance with claim 1 in which said solid particles have a pore diameter of about 0.003 micron to about 3.0 micron.
Claim 17
Dependent Claim
20 words
A composition of matter in accordance with claim 1 in which said solid particles are formed of a cross-linked polymer.
Claim 18
Dependent Claim
24 words
A composition of matter in accordance with claim 1 in which said solid particles are formed of a cross-linked copolymer of styrene and divinylbenzene.
Claim 19
Dependent Claim
27 words
A composition of matter in accordance with claim 1 in which said solid particles are formed of a cross-linked polymer of methyl methacrylate and ethylene glycol dimethacrylate.
Claim 20
Dependent Claim
28 words
A composition of matter in accordance with claim 1 in which said solid particles are compressible resilient particles and are the reaction product of cross-linking an ethylene-propylene-diene prepolymer.
Claim 21
Dependent Claim
28 words
A composition of matter in accordance with claim 1 in which said solid particles are compressible resilient particles and are the reaction product of cross-linking an ethylene-propylene-dicyclopentadiene prepolymer.
Claim 22
Dependent Claim
16 words
A composition of matter in accordance with claim 1 in which said solid particles are compressible.
Claim 23
Independent Claim
83 words
A method for impregnating an intersticed material with a functional substance, said material being a member selected from the group consisting of joined fibers, woven fabric, non-woven fabric, paper, woven cloth, non-woven cloth, foamed plastic and sponge, said method comprising placing soldi particles in the interstices of said material, said solid particles being from about one to about 100 microns in diameter and containing a substantially continuous network of pores open to the exterior of said particles, said pores containing said functional substance.
Claim 24
Independent Claim
83 words
A method for impregnating an intersticed material with a functional substance, said material being a member selected from the group consisting of joined fibers, woven fabric, non-woven fabric, paper, woven cloth, non-woven cloth, foamed plastic and sponge, said method comprising placing soldi particles in the interstices of said material, said solid particles being from about one to about 100 microns in diameter and containing a substantially continuous network of pores open to the exterior of said particles, said pores containing said functional substance.
Claim 25
Dependent Claim
14 words
A method in accordance with claim 22 in which said solid particles are compressible.
Claim 26
Dependent Claim
15 words
A method in accordance with claim 22 in which said solid particles are substantially noncompressible.
Claim 27
Dependent Claim
25 words
A method in accordance with claim 22 in which said solid particles have a total pore volume of about 0.1 cc/g to about 2.0 cc/g.
Claim 28
Dependent Claim
28 words
A method in accordance with claim 22 in which said solid particles have a surface area of about 1 m 2 /g to about 400 m 2 /g.
Claim 29
Dependent Claim
24 words
A method in accordance with claim 22 in which said solid particles have a pore diameter of about 0.003 micron to about 3.0 micron.
Claim 30
Dependent Claim
18 words
A method in accordance with claim 22 in which said solid particles are formed of a cross-linked polymer.
Claim 31
Dependent Claim
22 words
A method in accordance with claim 22 in which said solid particles are formed of a cross-linked copolymer of styrene and divinylbenzene.
Claim 32
Dependent Claim
25 words
A method in accordance with claim 22 in which said solid particles are formed of a cross-linked polymer of methyl methacrylate and ethylene glycol dimethacrylate.
Claim 33
Dependent Claim
26 words
A method in accordance with claim 22 in which said solid particles are compressible resilient particles and are the reaction product of cross-linking an ethylene-propylene-diene prepolymer.
Claim 34
Dependent Claim
26 words
A method in accordance with claim 22 in which said solid particles are compressible resilient particles and are the reaction product of cross-linking an ethylene-propylene-dicyclopentadiene prepolymer.
References Cited (Backward Citations)
US3896807A
Cited
WO1979000014A1
Cited
US4427793A
Cited
EP0041934A1
Cited
GB2080814A
Cited
US4514461A
Cited
US4706470A
Cited
US4690825A
Cited
US4904524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |