Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Organic component
Reexamination Certificate
2005-06-28
2005-06-28
Silverman, Stanley S. (Department: 1754)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Organic component
C055S524000, C095S141000, C095S143000, C095S273000, C422S122000
Reexamination Certificate
active
06911189
ABSTRACT:
A filter such as an air having a reagent which chemically reacts with and removes a gaseous component of an air stream. The reagent contains functional groups covalently bonded to a non-volatile inorganic substrate which is incorporated in the filter. The filter can remove gaseous components such as aldehydes. Preferred functional groups are 3-aminopropylsilyl groups covalently bonded to silica gel (APS silica gel). The reagent can be contained in a space in the filter or incorporated in one or more filter elements. The reagent can be part of or coated on paper such as filter paper or incorporated in non-paper filter elements formed from fibrous materials such as cellulose acetate or polypropylene fibers. Other preferred reagents include aminoethylaminopropylsilyl silica gel (AEAPS) and aminoethylaminoethylaminopropylsilyl silica gel (AEAEAPS).
REFERENCES:
patent: 2815760 (1957-12-01), Schreus et al.
patent: 2815761 (1957-12-01), Shearer, Jr.
patent: 2881772 (1959-04-01), Touey et al.
patent: 2968306 (1961-01-01), Touey et al.
patent: 3003504 (1961-10-01), Touey et al.
patent: 3251365 (1966-05-01), Keith, II et al.
patent: 3338249 (1967-08-01), Erlenmeyer
patent: 3354886 (1967-11-01), Berger et al.
patent: 3658070 (1972-04-01), Diluzio
patent: 3662765 (1972-05-01), Clark
patent: 3716063 (1973-02-01), Litzinger
patent: 3878853 (1975-04-01), Lipson
patent: 4033361 (1977-07-01), Horsewell et al.
patent: 4038992 (1977-08-01), Ogasa et al.
patent: 4059119 (1977-11-01), Grossman
patent: 4209628 (1980-06-01), Ikeda et al.
patent: 4227904 (1980-10-01), Kasmark, Jr. et al.
patent: 4300577 (1981-11-01), Horsewell et al.
patent: 4372328 (1983-02-01), Kausch et al.
patent: 4374814 (1983-02-01), Gaylord
patent: 4396026 (1983-08-01), Grossman
patent: 4466451 (1984-08-01), Bonnett et al.
patent: 4534775 (1985-08-01), Frazier
patent: 4547350 (1985-10-01), Gesser
patent: 4604110 (1986-08-01), Frazier
patent: 4637408 (1987-01-01), Rainer et al.
patent: 4683318 (1987-07-01), Deffeves et al.
patent: 4724242 (1988-02-01), Vassileff
patent: 4892719 (1990-01-01), Gesser
patent: 5009239 (1991-04-01), Cohen et al.
patent: 5012828 (1991-05-01), Hayes et al.
patent: 5060672 (1991-10-01), Irimi et al.
patent: 5083579 (1992-01-01), Vanim et al.
patent: 5115823 (1992-05-01), Keritsis
patent: 5115824 (1992-05-01), Marshall
patent: 5409021 (1995-04-01), Safaev et al.
patent: 5692525 (1997-12-01), Counts et al.
patent: 5714183 (1998-02-01), Pierre et al.
patent: 6119699 (2000-09-01), Sung
patent: 6209547 (2001-04-01), Koller et al.
patent: 34 47 445 (1986-08-01), None
patent: 0 121 436 (1984-10-01), None
patent: 1309486 (1962-11-01), None
patent: 2529892 (1984-01-01), None
patent: 1459019 (1996-04-01), None
patent: 6-86804 (1988-03-01), None
patent: 63-63369 (1988-03-01), None
patent: 3-229605 (1991-10-01), None
patent: 6-58219 (1994-03-01), None
patent: 6-209756 (1994-08-01), None
patent: WO 95/17105 (1995-06-01), None
patent: WO 95/47381 (1997-12-01), None
patent: 99/32002 (1999-07-01), None
Houck, Jr. Willie G.
Koller Kent B.
Paine, III John B.
Wrenn Susan E.
Medina Maribel
Philip Morris USA Inc.
Silverman Stanley S.
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