Patents Assigned to Supelco, Inc.
  • Patent number: 5653875
    Abstract: A structure comprising bodies having a functional surface property bonded to a substrate via a siloxane polymer adhesive. The structure may comprise a novel composition comprising a siloxane polymer having carbon bodies bonded thereto by direct carbon to silicon bonds. This composition may be used to bond carbon particles through a medium comprising the siloxane polymer to a vitreous, metal, plastic or other nucleophilic substrate. Alternatively, the bodies may comprise alumina, silicon, zeolite, organic polymers or other nucleophilic compositions, which are bonded directly to silicon atoms of the siloxane polymer. To bond carbon or other nucleophilic bodies to the substrate, the substrate is contacted with a mixture of the bodies and a hydrosiloxane polymer. The mixture is heated to cause the polymer to be bonded to the nucleophilic bodies, typically by C--Si, C--O--Si, Si--O--Si or Si--O--Al bonds, and to the substrate by reaction with the surface silanol or other nucleophilic groups.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: August 5, 1997
    Assignee: Supelco, Inc.
    Inventors: William R. Betz, James L. Desorcie
  • Patent number: 5630937
    Abstract: A structure comprising bodies having a functional surface property bonded to a substrate via a siloxane polymer adhesive. The structure may comprise a novel composition comprising a siloxane polymer having carbon bodies bonded thereto by direct carbon to silicon bonds. This composition may be used to bond carbon particles through a medium comprising the siloxane polymer to a vitreous, metal, plastic or other nucleophilic substrate. Alternatively, the bodies may comprise alumina, silicon, zeolite, organic polymers or other nucleophilic compositions, which are bonded directly to silicon atoms of the siloxane polymer. To bond carbon or other nucleophilic bodies to the substrate, the substrate is contacted with a mixture of the bodies and a hydrosiloxane polymer. The mixture is heated to cause the polymer to be bonded to the nucleophilic bodies, typically by C--Si, C--O--Si, Si--O--Si or Si--O--Al bonds, and to the substrate by reaction with the surface silanol or other nucleophilic groups.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 20, 1997
    Assignee: Supelco, Inc.
    Inventors: William R. Betz, James L. Desorcie
  • Patent number: 5620603
    Abstract: A structure comprising bodies having a functional surface property bonded to a substrate via a siloxane polymer adhesive. The structure may comprise a novel composition comprising a siloxane polymer having carbon bodies bonded thereto by direct carbon to silicon bonds. This composition may be used to bond carbon particles through a medium comprising the siloxane polymer to a vitreous, metal, plastic or other nucleophilic substrate. Alternatively, the bodies may comprise alumina, silicon, zeolite, organic polymers or other nucleophilic compositions, which are bonded directly to silicon atoms of the siloxane polymer. To bond carbon or other nucleophilic bodies to the substrate, the substrate is contacted with a mixture of the bodies and a hydrosiloxane polymer. The mixture is heated to cause the polymer to be bonded to the nucleophilic bodies, typically by C--Si, C--O--Si, Si--O--Si or Si--O--Al bonds, and to the substrate by reaction with the surface silanol or other nucleophilic groups.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 15, 1997
    Assignee: Supelco, Inc.
    Inventors: William R. Betz, James L. Desorcie
  • Patent number: 5609756
    Abstract: A structure comprising bodies having a functional surface property bonded to a substrate via a siloxane polymer adhesive. The structure may comprise a novel composition comprising a siloxane polymer having carbon bodies bonded thereto by direct carbon to silicon bonds. This composition may be used to bond carbon particles through a medium comprising the siloxane polymer to a vitreous, metal, plastic or other nucleophilic substrate. Alternatively, the bodies may comprise alumina, silicon, zeolite, organic polymers or other nucleophilic compositions, which are bonded directly to silicon atoms of the siloxane polymer. To bond carbon or other nucleophilic bodies to the substrate, the substrate is contacted with a mixture of the bodies and a hydrosiloxane polymer. The mixture is heated to cause the polymer to be bonded to the nucleophilic bodies, typically by C--Si, C--O--Si, Si--O--Si or Si--O--Al bonds, and to the substrate by reaction with the surface silanol or other nucleophilic groups.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 11, 1997
    Assignee: Supelco, Inc.
    Inventors: William R. Betz, James L. Desorcie
  • Patent number: 5607580
    Abstract: A structure comprising bodies having a functional surface property bonded to a substrate via a siloxane polymer adhesive. The structure may comprise a novel composition comprising a siloxane polymer having carbon bodies bonded thereto by direct carbon to silicon bonds. This composition may be used to bond carbon particles through a medium comprising the siloxane polymer to a vitreous, metal, plastic or other nucleophilic substrate. Alternatively, the bodies may comprise alumina, silicon, zeolite, organic polymers or other nucleophilic compositions, which are bonded directly to silicon atoms of the siloxane polymer. To bond carbon or other nucleophilic bodies to the substrate, the substrate is contacted with a mixture of the bodies and a hydrosiloxane polymer. The mixture is heated to cause the polymer to be bonded to the nucleophilic bodies, typically by C--Si, C--O--Si, Si--O--Si or Si--O--Al bonds, and to the substrate by reaction with the surface silanol or other nucleophilic groups.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 4, 1997
    Assignee: Supelco, Inc.
    Inventors: William R. Betz, James L. Desorcie
  • Patent number: 5599445
    Abstract: A structure comprising bodies having a functional surface property bonded to a substrate via a siloxane polymer adhesive. The structure may comprise a novel composition comprising a siloxane polymer having carbon bodies bonded thereto by direct carbon to silicon bonds. This composition may be used to bond carbon particles through a medium comprising the siloxane polymer to a vitreous, metal, plastic or other nucleophilic substrate. Alternatively, the bodies may comprise alumina, silicon, zeolite, organic polymers or other nucleophilic compositions, which are bonded directly to silicon atoms of the siloxane polymer. To bond carbon or other nucleophilic bodies to the substrate, the substrate is contacted with a mixture of the bodies and a hydrosiloxane polymer. The mixture is heated to cause the polymer to be bonded to the nucleophilic bodies, typically by C--Si, C--O--Si, Si--O--Si or Si--O--Al bonds, and to the substrate by reaction with the surface silanol or other nucleophilic groups.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 4, 1997
    Assignee: Supelco, Inc.
    Inventors: William R. Betz, James L. Desorcie
  • Patent number: 5552324
    Abstract: A reagent, an apparatus and a method for semi-quantitatively estimating the concentration of readily oxidizable organic vapors in a gas sample, as for example ethanol in a human breath sample, is disclosed. The ethanol-sensitive solid indicator is a solid support which contains a permanganate salt and is wetted by a strongly acidic or alkaline solution. In the presence of ethanol the indicator produces a clearly visible color change. The apparatus contains the indicator and provides a pathway for a gas sample through the indicator. The method allows estimation of the organic-vapor content of a gas sample by comparing the volume of indicator which changes color in response to the gas sample with the volume which changes color in response to a known-concentration standard.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: September 3, 1996
    Assignee: Supelco, Inc.
    Inventor: Francis P. Liu
  • Patent number: 5137627
    Abstract: Silica gel chromatographic supports surface-modified with (R.sup.1 O).sub.3-m Si R.sup.2.sub.m(CH.sub.2).sub.3 NH(CH.sub.2 CH.sub.2 NH).sub.n H, in which R.sup.1 is a C.sub.1 -C.sub.5 alkyl, R.sup.2 is methyl or ethyl, and m and n are independently selected from the integers 0, 1 or 2, and further modified chemically to produce reverse-phase character, markedly reduce the interaction between silanophilic analytes and the silanol groups present on the surface of the silica gel through the presence of polar groups, which include the residual unmodified amino and modified amino groups, and which are densely packed near the silica surface. This results in chromatographic elution of basic, silanophilic analytes in efficient, narrow bands similar to those of the less-polar analytes.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: August 11, 1992
    Assignee: Supelco, Inc.
    Inventor: Binyamin Feibush
  • Patent number: 5047438
    Abstract: Porous, rigid resin particles are prepared having a predetermined particle size distribution, surface area and porosity by polymerizing in the pores of porous inorganic template particles a reaction mixture comprising monovinyl monomers, polyvinyl crosslinking monomers and a polymerization initiator in a liquid medium in which the monomers and initiator are phase separable and extractable therefrom into the pores of the template particles. The extracted mixture is polymerized in the pores of the template particles, and the template particles are removed without destruction of the polymerizate. The isolated polymerizate mirrors the characteristics of the template particles. The surface of the polymerizate may be modified in various ways to contain desired functionality. The particles of the invention are useful in chromatography, adsorption, ion exchange, and in catalysis.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: September 10, 1991
    Assignee: Supelco, Inc.
    Inventors: Binyamin Feibush, Nai-Hong Li
  • Patent number: 4933372
    Abstract: Porous, rigid resin particles are prepared having a predetermined particle size distribution, surface area and porosity by polymerizing in the pores of porous inorganic template particles a reaction mixture comprising monovinyl monomers, polyvinyl crosslinking monomers and a polymerization initiator in a liquid medium in which the monomers and initiator are phase separable and extractable therefrom into the pores of the template particles. The extracted mixture is polymerized in the pores of the template particles, and the template particles are removed without destruction of the polymerizate. The isolated polymerizate mirrors the characteristics of the template particles. The surface of the polymerizate may be modified in various ways to contain desired functionality. The particles of the invention are useful in chromatography, adsorption, ion exchange, and in catalysis.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: June 12, 1990
    Assignee: Supelco, Inc.
    Inventors: Binyamin Feibush, Nai-Hong Li
  • Patent number: 4529230
    Abstract: A connector for the joining together two fused silica or glass or other types of capillary tubes, in a chromatography system, without detrimental chromatographic effects created by distortion of the two joined capillary tubes, dead volumes or exposure to metal surfaces, or for the butt joining of glass rods, has a pliable elongate surrounding member which sealingly engages a substantial length of each tube or rod from its end as well as supports each and thereby eliminates exposure to a housing or container surface.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: July 16, 1985
    Assignee: Supelco, Inc.
    Inventor: William F. Fatula, Jr.
  • Patent number: D289861
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: May 19, 1987
    Assignee: Supelco, Inc.
    Inventors: George D. Wachob, Robert W. Rightnour
  • Patent number: D312691
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: December 4, 1990
    Assignee: Supelco, Inc.
    Inventor: Paul S. Spock
  • Patent number: D312876
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: December 11, 1990
    Assignee: Supelco Inc.
    Inventor: Paul S. Spock
  • Patent number: D316897
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: May 14, 1991
    Assignee: Supelco, Inc.
    Inventors: Barry L. Burger, John F. McDevitt
  • Patent number: D319879
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: September 10, 1991
    Assignee: Supelco, Inc.
    Inventors: George D. Wachob, Brian R. Lowery