Patent US4682992A successfully refreshed from Google Patents.
US4682992A
Expired / Lapsed
US
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Microbicidal coated beads
Assignee: Potters Industries LLC
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Filing: 1984-06-25
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Granted: 1987-07-28
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Expires: 2004-06-25
Abstract
Abstract Organosilicon quaternary ammonias and other microbicidal compounds are bound to the surface of discrete inorganic particles such as glass spheres. Inorganic particles coated with the microbicidal compounds are used in hospital fluidized beds, air filters, and other products in which microbicidal qualities are desired.
Inventors
- 👤 Alfred E. Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:29
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/84; B01D53/85; A; A01; A01N; A01N25/00; A01N25/26; A01N55/00; A61; A61L; A61L9/00; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y10; Y10S; Y10S428/00; Y10S428/907
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
43 words
A composition consisting essentially of discrete and separate minute and inorganic spheroidal particles coated with surface hindered microbicidal agents which microbicidal agents are firmly bound to the surface of the inorganic particles to provide a dry microbicidal coating on each of said particles.
Claim 2
Dependent Claim
43 words
A composition consisting essentially of discrete and separate minute and inorganic spheroidal particles coated with surface hindered microbicidal agents which microbicidal agents are firmly bound to the surface of the inorganic particles to provide a dry microbicidal coating on each of said particles.
Claim 3
Dependent Claim
16 words
A composition as in claim 1 wherein the surface hindered microbicidal agents are quaternary ammonium compounds.
Claim 4
Dependent Claim
17 words
A composition as in claim 1 wherein the surface hindered microbicidal agents are orgainc quaternary ammonium compounds.
Claim 5
Dependent Claim
17 words
A composition as in claim 1 wherein the surface hindered microbicidal agents are organosilicon quaternary ammonium compounds.
Claim 6
Dependent Claim
15 words
A composition as in claim 1 wherein the surface hindered microbicidal agents are quaternary ammonium
Claim 7
Dependent Claim
17 words
A composition as in claim 1 wherein the surface hindered microbicidal agents are organosilicon quaternary ammonium chlorides.
Claim 8
Dependent Claim
41 words
A composition as in claim 1 wherein the surface hindered microbicidal agents are one or more compounds selected from the group consisting of: (1) octadecyldimethyl [3-(trimethoxysilyl) propyl ammonium chloride in organic solvent; and (2) N-Trimethoxysilylpropyl-N, N-Trimethyl ammonium chloride in organic solvent.
Claim 9
Dependent Claim
22 words
A composition as in claim 1 wherein the discrete inorganic particles are comprised of glass, silica gel, or a mixture of both.
Claim 10
Dependent Claim
41 words
A composition as in claim 10 wherein the surface hindered microbicidal agents are one or more compounds selected from the group consisting of: (1) octadecyldimethyl [3-(trimethoxysilyl) propyl ammonium chloride in organic solvent; and (2) N-Trimethoxysilylpropyl-N, N-Trimethyl ammonium chloride in organic solvent.
Claim 11
Dependent Claim
23 words
A composition as in claim 1 wherein the discrete inorganic particles are glass spheres or silica gel spheres or a mixture of both.
Claim 12
Dependent Claim
17 words
A composition as in claim 10 wherein the surface hindered microbicidal agents are organic quaternary ammonium compounds.
Claim 13
Dependent Claim
64 words
A fluidized bed comprised of discrete inorganic spheroidal particles coated with surface hindered microbicidal agents, which microbicidal agents are firmly bound to the surface of the inorganic particles to provide a dry microbicidal coating on each of said particles; and means for directing a fluidizing gas against the thus coated particles to maintain the same in a constant state of fluidization within said bed.
Claim 14
Dependent Claim
64 words
A fluidized bed comprised of discrete inorganic spheroidal particles coated with surface hindered microbicidal agents, which microbicidal agents are firmly bound to the surface of the inorganic particles to provide a dry microbicidal coating on each of said particles; and means for directing a fluidizing gas against the thus coated particles to maintain the same in a constant state of fluidization within said bed.
Claim 15
Dependent Claim
65 words
A fluidized bed as in claim 12 wherein the fluidizing gas comprises air, and which further comprises at least one air filter communicating with said directing means, said air filter being comprised of discrete inorganic spheroidal particles coated with surface hindered microbicidal agents which are firmly bound to the surface of the inorganic particles to provide a dry microbicidal coating on each of said particles.
Claim 16
Dependent Claim
33 words
A fluidized bed as in claim 12 wherein the discrete inorganic particles are glass spheres or silica gel spheres or a mixture of both, and the biocidal compounds are organic quaternary ammonium compounds.
Claim 17
Dependent Claim
40 words
A fluidized bed as in claim 14 wherein the microbicidal agents are one or more compounds selected from the group consisting of: (1) octadecyldimethyl [3-(trimethoxysilyl) propyl ammonium chloride in organic solvent; and (2) N-Trimethoxysilylpropyl-N, N-Trimethyl ammonium chloride in organic solvent.
Claim 18
Dependent Claim
43 words
An air filter consisting essentially of discrete and separate minute inorganic spheroidal particles coated with surface hindered microbicidal agents, which microbicidal agents are firmly bound to the surface of the inorganic particles, to provide a dry microbicidal coating on each of said particles.
Claim 19
Dependent Claim
43 words
An air filter consisting essentially of discrete and separate minute inorganic spheroidal particles coated with surface hindered microbicidal agents, which microbicidal agents are firmly bound to the surface of the inorganic particles, to provide a dry microbicidal coating on each of said particles.
Claim 20
Dependent Claim
34 words
An air filter as in claim 6 wherein the discrete inorganic spheroidal particles are comprised of glass or silica gel or a mixture of both, and the microbicidal agents are organic quaternary ammonium compounds.
Claim 21
Dependent Claim
40 words
An air filter as in claim 17 wherein the microbicidal agents are one or more compounds selected from the group consisting of: (1) octadecyldimethyl [3-(trimethoxysilyl) propyl ammonium chloride in organic solvent; and (2) N-Trimethoxysilylpropyl-N, N-Trimethyl ammonium chloride in organic solvent.
Claim 22
Dependent Claim
61 words
A composition which comsists essentially of, in combination: a multiplicity of discrete and separate inorganic spheroidal particles ranging in size from about 1 to about 200 microns; and a surface hindered microbidcidal coating on each of said inorganic particles, said coating being firmly bound to the surfaces of the particles to provide a dry microbicidal coating on each of said particles.
Claim 23
Dependent Claim
61 words
A composition which comsists essentially of, in combination: a multiplicity of discrete and separate inorganic spheroidal particles ranging in size from about 1 to about 200 microns; and a surface hindered microbidcidal coating on each of said inorganic particles, said coating being firmly bound to the surfaces of the particles to provide a dry microbicidal coating on each of said particles.
Claim 24
Dependent Claim
63 words
A composition which consists essentially of, in combination: a multipilicity of spheroidal glass beads ranging in size from about 1 to about 200 microns; and a surface hindered microbicidal coating on each of said glass beads, said coating comprising organosilicon quaternary ammonium chlorides and being firmly bound to the spherical surfaces of the beads, to provide a dry microbicidal coating on each bead.
Claim 25
Dependent Claim
63 words
A composition which consists essentially of, in combination: a multipilicity of spheroidal glass beads ranging in size from about 1 to about 200 microns; and a surface hindered microbicidal coating on each of said glass beads, said coating comprising organosilicon quaternary ammonium chlorides and being firmly bound to the spherical surfaces of the beads, to provide a dry microbicidal coating on each bead.
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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) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |