Patents by Inventor Hugh A. Thompson

Hugh A. Thompson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5331015
    Abstract: Disclosed are absorbent foam materials suitable for use as or in the absorbent cores of absorbent articles, such as diapers which absorb and retain aqueous body fluids. Such foam materials comprise hydrophilic, flexible open-celled structures which are preferably prepared by polymerizing high internal phase (HIPE) water-in-oil emulsions. Such foam materials have a pore volume of from about 12 to 100 mL/g, and a capillary suction specific surface area of from about 0.5 to 5.0 m.sup.2 /g. These materials also exhibit a resistance to compression deflection such that a confining pressure of 5.1 kPa produces after 15 minutes a strain of from about 5% to 95% compression when the material is saturated at 37.degree. C. to its free absorbent capacity with synthetic urine.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: July 19, 1994
    Assignee: The Procter & Gamble Company
    Inventors: Thomas A. DesMarais, Keith J. Stone, Hugh A. Thompson, Gerald A. Young, Gary D. LaVon, John C. Dyer
  • Patent number: 5281208
    Abstract: Fibers having intra-fiber capillary channels are used in conjunction with topsheet materials in absorbent articles such as diapers, bandages and, especially, sanitary napkins. In-use, the capillary channel fibers draw fluid away from the topsheet to provide a clean, dry appearance.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: January 25, 1994
    Assignee: The Procter & Gamble Company
    Inventors: Hugh A. Thompson, Gerald A. Young
  • Patent number: 5268224
    Abstract: Disclosed are absorbent foam materials suitable for use as or in the absorbent cores of absorbent articles, such as diapers which absorb and retain aqueous body fluids. Such foam materials comprise hydrophilic, flexible open-celled structures which are preferably prepared by polymerizing high internal phase (HIPE) water-in-oil emulsions. Such foam materials have a pore volume of from about 12 to 100 mL/g, and a capillary suction specific surface area of from about 0.5 to 5.0 m.sup.2 /g. These materials also exhibit a resistance to compression deflection such that a confining pressure of 5.1 kPa produces after 15 minutes a strain of from about 5% to 95% compression when the material is saturated at 37.degree. C. to its free absorbent capacity with synthetic urine.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: December 7, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Thomas A. DesMarais, Keith J. Stone, Hugh A. Thompson, Gerald A. Young, Gary D. LaVon, John C. Dyer
  • Patent number: 5268229
    Abstract: This invention relates to spinnerets having orifices of unique cross-sections, the spinnerets being useful for extruding therethrough filaments having "U" and "E" shaped cross-sections with stabilizing legs. The use of strategically placed stabilizing legs allow the filaments to maintain the desired shape. The "U" shaped filament cross-section provides improved drainage over previous filament cross-sections.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: December 7, 1993
    Assignee: Eastman Kodak Company
    Inventors: Bobby M. Phillips, Jack L. Nelson, William A. Haile, Hugh A. Thompson
  • Patent number: 5260345
    Abstract: Disclosed are absorbent foam materials suitable for use as or in the absorbent cores of absorbent articles, such as diapers which absorb and retain aqueous body fluids. Such foam materials comprise hydrophilic, flexible open-celled structures which are preferably prepared by polymerizing high internal phase (HIPE) water-in-oil emulsions. Such foam materials have a pore volume of from about 12 to 100 mL/g, and a capillary suction specific surface area of from about 0.5 to 5.0 m.sup.2 /g. These materials also exhibit a resistance to compression deflection such that a confining pressure of 5.1 kPa produces after 15 minutes a strain of from about 5% to 95% compression when the material is saturated at 37.degree. C. to its free absorbent capacity with synthetic urine.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: November 9, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Thomas A. DesMarais, Keith J. Stone, Hugh A. Thompson, Gerald A. Young, Gary D. LaVon, John C. Dyer
  • Patent number: 5242644
    Abstract: A process and extrusion die for making capillary channel structures having one or more intrastructure capillary channels. The process includes feeding a flowable, molten polymer composition through an extrusion die having an annular base orifice from which a plurality of capillary channel wall orifices radially extend. The extrusion die has a gas inlet port located interior to the annular base orifice. Simultaneous with feeding the polymer composition through the extrusion die's annular base and capillary channel wall orifices a gaseous stream is directed through the gas inlet port in the same direction as the flow of molten polymer composition. Subsequent to exit of the polymer composition from the extrusion die, the capillary channel structure is drawn to a desired size and cooled.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: September 7, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Hugh A. Thompson, Edward H. Kraut6ter
  • Patent number: 5200248
    Abstract: Capillary channel structures having one or more intrastructure capillary channels, said structures comprising a polymer composition, wherein: said structures have a capillary channel base, and at least two polymeric capillary channel walls extending from said base along the length of said base in the axial direction for at least about 0.2 cm, said walls having a base end and a distal end, wherein said base and walls form said capillary channels; and said structures have a Specific Capillary Volume of at least about 1.2 cc/g, a Specific Capillary Surface Area of at least about 500 cm.sup.2 /g, and a Compressive Strength (Dry) of at least about 13,800 dynes/cm.sup.2. The structures can be in the form of fibers or sheets. The fibers have a Specific Capillary Volume of at least about 2.0 cc/g and a Specific Capillary Surface Area of at least about 2000 cm.sup.2 /g.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: April 6, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Hugh A. Thompson, Edward H. Krautter
  • Patent number: 4623329
    Abstract: A catheter for drainage of or infusion into a body cavity. The catheter comprises an elongated tubular shaft having a distal end provided with at least one port near the distal end and intended to be located in the body cavity. The catheter has an open proximal end for connection to a drain, suction conduit or infusion line. A sleeve is mounted about the shaft extending along a portion at least of the internal body surface contacting part thereof between its proximal and distal ends. The sleeve forms a substantially concentric fluid reservoir between the drainage tube and the sleeve. Filling means are provided at the proximal end of the shaft for supplying to the reservoir a fluid antimicrobial agent capable of controlled passage through the sleeve by diffusion. The inner surface of the sleeve is provided with a plurality of longitudinally extending capillary channels or grooves providing uniform distribution of the fluid antimicrobial agent within the reservoir and throughout the length of the reservoir.
    Type: Grant
    Filed: December 15, 1983
    Date of Patent: November 18, 1986
    Assignee: The Procter & Gamble Company
    Inventors: James L. Drobish, Eldon G. Spletzer, Hugh A. Thompson
  • Patent number: 4601868
    Abstract: A resilient plastic web exhibiting a fiber-like appearance and tactile impression and method and apparatus for its manufacture. In a preferred embodiment, the web exhibits a three-dimensional microstructure comprising a regulated continuum of debossed areas of non-uniform cross-section along their length. In a particularly preferred embodiment, the debossed areas comprise capillary networks interconnecting the first and second surfaces of the web, said networks being of decreasing size in the direction of said second surface to promote fluid transport from the first surface of the web to the second surface and inhibit the flow of fluid in the reverse direction. Forming surfaces utilized to produce said webs are constructed by laminating a multiplicity of thin plates having patterns of apertures therein to form an integral structure exhibiting properties and characteristics unachievable by prior art machining and weaving techniques.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: July 22, 1986
    Assignee: The Procter & Gamble Company
    Inventors: Clifford J. Radel, Hugh A. Thompson
  • Patent number: 4591523
    Abstract: The present invention pertains, in a particularly preferred embodiment, to an apertured, macroscopically expanded, resilient three-dimensional polymeric web which is believed to have particular utility as a breatheable barrier for a disposable bandage such as a diaper. The web preferably comprises a deeply drawn three-dimensional structure containing a multiplicity of debossments of macroscopic (i.e., visibly perceivable by the normal human eye at a perpendicular distance of about one foot) cross-section, each of said debossments originating as an aperture in a first surface of the web and having a continuously interconnected side wall extending in the direction of a second, remotely located parallel surface of the web. The side wall of each debossment terminates to form an end wall in the second surface of the web. The end wall includes a multiplicity of apertures, each of said apertures being sized and shaped to independently support an aqueous fluid meniscus.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: May 27, 1986
    Assignee: The Procter & Gamble Company
    Inventor: Hugh A. Thompson
  • Patent number: 4556450
    Abstract: An apparatus for removing water or other liquids from webs of such porous materials as fibrous paper webs coursing through a papermaking machine without substantially compacting the webs. The web which may be coherent or perforate passes over a sector of a cylinder having preferential-capillary-size pores through its cylindrical-shape porous cover. Preferably, the porous cover comprises hydrophilic material which is substantially non-resilient and which renders the surfaces of the porous cover wettable by the liquid of interest. A portion of the interior of the cylinder may be subjected to a controlled level of vacuum to effect pneumatically augmented capillary flow of liquid from the web; and another portion of the cylinder may be subjected to pneumatic pressure for expelling the transferred liquid outwardly through a portion of the porous cover which is not in contact with the web.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: December 3, 1985
    Assignee: The Procter & Gamble Company
    Inventors: Strong C. Chuang, Hugh A. Thompson
  • Patent number: 4508256
    Abstract: A resilient plastic web exhibiting a fiber-like appearance and tactile impression and method and apparatus for its manufacture. In a preferred embodiment, the web exhibits a three-dimensional microstructure comprising a regulated continuum of debossed areas of non-uniform cross-section along their length. In a particularly preferred embodiment, the debossed areas comprise capillary networks interconnecting the first and second surfaces of the web, said networks being of decreasing size in the direction of said second surface to promote fluid transport from the first surface of the web to the second surface and inhibit the flow of fluid in the reverse direction. Forming surfaces utilized to produce said webs are constructed by laminating a multiplicity of thin plates having patterns of apertures therein to form an integral structure exhibiting properties and characteristics unachievable by prior art machining and weaving techniques.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: April 2, 1985
    Assignee: The Procter & Gamble Company
    Inventors: Clifford J. Radel, Hugh A. Thompson
  • Patent number: 4401103
    Abstract: Apparatus for converting solar energy to useful energy principally for home use. The apparatus provides a complete system for receiving solar energy over a large area, e.g. 1,000 square feet; concentrating the energy; and directing the energy toward a target of a few square feet at an extremely high temperature. The receiving, concentrating and transmitting apparatus consists of an array of collectors provided with mechanisms for tracking the sun. The collectors include a system of reflectors and/or lenses to first concentrate and then direct the energy toward the target.The system further includes a substantial storage chamber with means for circulating a fluid between the target and the storage chamber to transfer heat from the target to the storage chamber. The system further includes means for transferring the heat from the target and/or storage system to a heat engine and electrical generator combination to create power for use on demand.
    Type: Grant
    Filed: April 28, 1980
    Date of Patent: August 30, 1983
    Inventor: Hugh A. Thompson
  • Patent number: 4342314
    Abstract: A resilient plastic web exhibiting a fiber-like appearance and tactile impression and method and apparatus for its manufacture. In a preferred embodiment, the web exhibits a three-dimensional microstructure comprising a regulated continuum of debossed areas of non-uniform cross-section along their length. In a particularly preferred embodiment, the debossed areas comprise capillary networks interconnecting the first and second surfaces of the web, said networks being of decreasing size in the direction of said second surface to promote fluid transport from the first surface of the web to the second surface and inhibit the flow of fluid in the reverse direction. Forming surfaces utilized to produce said webs are constructed by laminating a multiplicity of thin plates having patterns of apertures therein to form an integral structure exhibiting properties and characteristics unachievable by prior art machining and weaving techniques.
    Type: Grant
    Filed: November 13, 1980
    Date of Patent: August 3, 1982
    Assignee: The Procter & Gamble Company
    Inventors: Clifford J. Radel, Hugh A. Thompson