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1. (WO2001030491) BROAD SPECTRUM FILTER SYSTEM FOR FILTERING CONTAMINANTS FROM AIR OR OTHER GASES
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/030491 International Application No.: PCT/US2000/027680
Publication Date: 03.05.2001 International Filing Date: 06.10.2000
Chapter 2 Demand Filed: 29.05.2001
IPC:
B01D 53/02 (2006.01) ,B01J 20/20 (2006.01) ,B01J 20/32 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
02
by adsorption, e.g. preparative gas chromatography
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
20
Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
02
comprising inorganic material
20
comprising free carbon; comprising carbon obtained by carbonising processes
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
20
Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
30
Processes for preparing, regenerating or reactivating
32
Impregnating or coating
Applicants:
3M INNOVATIVE PROPERTIES COMPANY [US/US]; 3M Center Post Office Box 33427 Saint Paul, MN 55133-3427, US
Inventors:
SMITH, Simon, J.; US
HERN, Jamie, A.; US
Agent:
HANSON, Karl, G. ; Office of Intellectual Property Counsel Post Office Box 33427 Saint Paul, MN 55133-3427, US
Priority Data:
09/576,40622.05.2000US
60/161,33125.10.1999US
Title (EN) BROAD SPECTRUM FILTER SYSTEM FOR FILTERING CONTAMINANTS FROM AIR OR OTHER GASES
(FR) SYSTEME FILTRANT A SPECTRE LARGE POUR LE FILTRAGE DE CONTAMINANTS PRESENTS DANS L'AIR OU D'AUTRES GAZ
Abstract:
(EN) Filter medium includes at least two kinds of filter media particles. A first plurality of filter media particles includes an extended surface area substrate comprising at least one transition metal impregnant. A second plurality of filter media particles includes an extended surface area substrate comprising a tertiary amine impregnant. In preferred embodiments, at least one and preferably both of the kinds of filter media particles is/are substantially free of chromium, and more preferably contain no detectable chromium. The filtering medium has very broad filtering capabilities. The filtering medium successfully achieves performance levels mandated both by applicable industrial filter approval specifications and by international military filter performance specifications.
(FR) L'invention se rapporte à un milieu filtrant comportant au moins deux sortes de particules pour milieux filtrants. Une première pluralité de particules pour milieux filtrants inclut un substrat à aire de surface étendue comportant au moins un produit d'imprégnation à base d'un métal de transition. Une seconde pluralité de particules pour milieux filtrants inclut un substrat à aire de surface étendue comportant un produit d'imprégnation à base d'une amine tertiaire. Dans les réalisations préférées de l'invention, l'un au moins de ces types de particules pour milieux filtrants, ou de préférence les deux, ne contient/contiennent sensiblement pas de chrome, et idéalement ne contient/contiennent pas de chrome détectable. Ce milieu filtrant possède des capacités de filtrage très étendues. Il est susceptible de répondre avantageusement aux exigences de niveaux de performances prescrites à la fois par les spécifications d'agrément applicables relatives aux filtres industriels et par les spécifications internationales de performance des filtres militaires.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)