Patents Represented by Attorney, Agent or Law Firm David Bennett
  • Mass transfer device
    Patent number: 5911922
    Abstract: A mass transfer device is provided in the form of a tray having moveable valves which includes perforations spanned by bridge members shaped to divert liquid flowing in the design flow direction around the perforation such that gas rising through the perforation causes the valve to open and then encounters the liquid flow essentially at right angles.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: June 15, 1999
    Assignee: Norton Chemical Process Products Corporation
    Inventors: Richard P. Hauser, Bruce C. Taylor, John Harris, Joe Schirra, Frank Rukovens
  • Liquid distributor
    Patent number: 5906773
    Abstract: Significant savings of space inside a mass transfer tower can be obtained by use of a liquid distributor system with efficient uniform distribution from conduits such as troughs, pipes or deck distributors using flow spreader devices located predominantly below the conduit enabling closer spacing of liquid distribution points within the tower.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: May 25, 1999
    Assignee: Norton Company
    Inventors: Gail W. Hausch, Douglas S. Byrd
  • Abrasive products
    Patent number: 5885311
    Abstract: Coated abrasive materials can be made from a substrate and, adhered to the substrate by a maker coat, weak shaped abrasive grits with, interspersed between the abrasive grits, a plurality of non-abrasive particles that are smaller than the abrasive grits which serve to raise the level of a size coat applied over the maker coat and abrasive grits such that the abrasive grits are anchored over a greater part of their length without the need for the application of a large volume of size coat and such that a grinding adjuvant included in the topmost coat is located adjacent the tips of the abrasive grits which perform the grinding when the coated abrasive is in use.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: March 23, 1999
    Assignee: Norton Company
    Inventors: William F. McCutcheon, Constantinos Caracostas, Ralph Bauer, Gregg M. Bosak, Gary J. Kardys
  • Production of patterned abrasive surfaces
    Patent number: 5863306
    Abstract: Coated abrasives suitable for very fine abrading applications can be obtained by depositing a layer of a formulation comprising abrasive grits, fillers, grinding aid, additives and a binder resin on a substrate, treating the formulation to increase the viscosity and render it plastic but non-flowing, embossing a suitable pattern on the surface of the layer, and then curing the binder component of the formulation.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: January 26, 1999
    Assignee: Norton Company
    Inventors: Paul Wei, Gwo Shin Swei, Wenliang Patrick Yang, Kevin Bruce Allen
  • Rotogravure process for production of patterned abrasive surfaces
    Patent number: 5840088
    Abstract: Coated abrasives suitable for very fine abrading applications can be obtained by depositing formulations comprising abrasive grits, fillers, grinding aid, additives and a binder resin and in patterns on a surface using a rotogravure technique providing the viscosity is controlled such that the formulation deposited does not lose its shape prior to cure.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: November 24, 1998
    Assignee: Norton Company
    Inventors: Wenliang Patrick Yang, Gwo Shin Swei, Kevin Bruce Allen, Paul Wei
  • Structured abrasives with adhered functional powders
    Patent number: 5833724
    Abstract: Coated abrasives suitable for very fine abrading applications can be obtained by depositing a layer of a formulation comprising abrasive grits, fillers, grinding aid, additives and a binder resin on a substrate in the form of a structured abrasive and then adhering to the surface of the structured abrasive a functional powder.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: November 10, 1998
    Assignee: Norton Company
    Inventors: Paul Wei, Gwo Shin Swei, Wenliang Patrick Yang, Kevin Bruce Allen
  • Support plate
    Patent number: 5814249
    Abstract: Support plates for packing materials in mass transfer towers made using parallel beams with generally inverted U-shaped cross-sections which contact one another along a line running the length of the beams, are provided with a trough member supported directly under the contact line between adjacent beams.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: September 29, 1998
    Assignee: Norton Chemical Process Products Corporation
    Inventor: Michael J. Dolan
  • Firing sol-gel alumina particles
    Patent number: 5785722
    Abstract: Sol-gel alumina that is dried but unfired can be explosively comminuted by feeding the dried gel into a furnace held at temperatures above those at which vaporizable materials are eliminated from the particles of gel. At suitably elevated temperatures the firing is sufficient to form fully densified alpha alumina particles of a size suitable for direct use as abrasive grits.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: July 28, 1998
    Assignee: Saint-Gobain/Norton Industrial Ceramics Corporation
    Inventors: Ajay K. Garg, Arup K. Khaund, Lawrence E. Orne, Mark R. Young
  • Low cost coated abrasives
    Patent number: 5782939
    Abstract: Substantial cost saving can be realized in a coated abrasive structure employing a plurality of layers of particulate material, if at least one of the under-layers of particles is provided by a layer of ground glass.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: July 21, 1998
    Assignee: Norton Company
    Inventors: Burton Farbstein, Bernard Loughlin, Christopher Gruel
  • Mass transfer device
    Patent number: 5762834
    Abstract: A mass transfer device is provided in the form of a tray having perforations spanned by bridge members shaped to divert liquid flowing in the design flow direction around the perforation such that gas rising through the perforation encounters the liquid flow essentially at right angles.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: June 9, 1998
    Inventors: Richard P. Hauser, Bruce C. Taylor, John Harris, Joe Schirra
  • Packing element
    Patent number: 5747143
    Abstract: The invention provides novel mass transfer elements with a corrugated body structure and having ends turned back in a direction opposed to the curves of the corrugations such that the ends are turned towards one another. These elements are particularly effective as random dumped packing for mass transfer towers, providing a combination of high surface area and low pressure drop.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: May 5, 1998
    Assignee: Norton Chemical Process Products Corporation
    Inventor: Hassan Niknafs
  • Catalyst carrier
    Patent number: 5733840
    Abstract: A process for the production of an alumina based catalyst carrier in which a fired carrier body is impregnated with a source of titania in a liquid medium that upon heating yields titania and then calcined to generate titania uniformly dispersed in the carrier in an amount up to about 10% by weight.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: March 31, 1998
    Assignee: Norton Chemical Process Products Corporation
    Inventors: Thomas Szymanski, John Lockemeyer
  • Method of making porous catalyst carrier without the addition of pore forming agents
    Patent number: 5733842
    Abstract: An improved catalyst carrier is formed by a process that comprises the use of ceramic particle components with particle sizes chosen to ensure that a desired degree of porosity is obtained without recourse to the use of organic burnout materials.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: March 31, 1998
    Assignee: Norton Checmical Process Products Corporation
    Inventors: William H. Gerdes, Donald J. Remus, Thomas Szymanski
  • Corrosion resistant ceramic bodies
    Patent number: 5731250
    Abstract: Ceramic bodies comprised mainly of zircon and wollastonite, with zircon being the dominant crystalline phase, show improved resistance to alkaline conditions at elevated temperatures than conventional bodies and excellent thermal stability.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: March 24, 1998
    Assignee: Norton Chemical Process Products Corporation
    Inventors: John S. Reid, Thomas Szymanski
  • Firing sol-gel alumina particles
    Patent number: 5725162
    Abstract: Sol-gel alumina that is dried but unfired can be explosively comminuted by feeding the dried gel into a furnace held at temperatures above those at which vaporizable materials are eliminated from the particles of gel. At suitably elevated temperatures the firing is sufficient to form fully densified alpha alumina particles of a size suitable for direct use as abrasive grits.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: March 10, 1998
    Assignee: Saint Gobain/Norton Industrial Ceramics Corporation
    Inventors: Ajay K. Garg, Arup K. Khaund, Lawrence E. Orne, Mark R. Young
  • Abrasive products
    Patent number: 5695533
    Abstract: Coated abrasive materials can be made from a backing material with abrasive particles adhered to the backing through an orienting layer in the form of a mesh of a size and dimensions to ensure that the orientation of the grits substantially perpendicular to the coating material is maintained.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: December 9, 1997
    Assignee: Norton Company
    Inventors: Gary J. Kardys, Wendy A. Herrick
  • Tower packing element
    Patent number: 5688444
    Abstract: Tower packing element comprising a tubular body member with an essentially triangular cross-section and having projections within the element extending from the inside surface of the body member, is provided. The axial length of the tubular body member is smaller than the width as measured from an apex of the triangle to the nearest point on the opposed side.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: November 18, 1997
    Assignee: Norton Chemcial Process Products Corporation
    Inventor: T. Daniel Koshy
  • Packing element
    Patent number: 5660767
    Abstract: The invention provides highly deformation resistant Lessing rings made in two parts. The first part comprises a metal strip bent into a ring shape with the contacting ends provided with projections and indentations which fit together to form a complete ring. The ends are held together using an anchor strut which has projecting tabs at both ends. The tabs fit into cooperating slots located in the projections at the ends of the bent strip and at the midpoint of the bent metal strip. The tabs are bent over to locate all parts rigidly in place.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: August 26, 1997
    Assignee: Norton Chemical Process Products Corp.
    Inventor: Frank D. Moore
  • Process for quenching molten ceramic material
    Patent number: 5651925
    Abstract: A process is provided that permits the rapid quenching of molten ceramics by passing a flow of the molten ceramic into a turbulent fluid flow such that the flow is broken up into particles which then solidify as they pass into and through a cyclone and are finally separated from the fluid flow and collected as dry particulate ceramic materials.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: July 29, 1997
    Assignee: Saint-Gobain/Norton Industrial Ceramics Corporation
    Inventors: Peter J. Ashley, Larry Hill, Christopher E. Knapp, Rene G. Demers, D. C. Batchelor
  • Mass transfer packing element
    Patent number: D381394
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: July 22, 1997
    Assignee: Norton Chemical Process Products corp.
    Inventors: Henry G. Lex, Jr., Hassan S. Niknafs