Patents Examined by James C. Cannon
  • Patent number: 5618610
    Abstract: Here is disclosed an improved nonwoven fabric wiper obtained by a method comprising steps of forming a laminate from a web of thermally shrinkable hydrophobic synthetic fibers and a web of hydrophilic fibers put one upon another, jetting high pressure water onto the laminate supported on a supporting roll provided on its peripheral surface with a plurality of fine projections as well as a plurality of drainage apertures, causing the fibers to be entangled or intertwined and rearranged and thereby forming a nonwoven fabric having uneven fiber distribution densities, and heating the nonwoven fabric to crimp the synthetic fibers so that only portions of relatively high fiber density may bulge.
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: April 8, 1997
    Assignee: Uni-Charm Corporation
    Inventors: Katsushi Tomita, Masahiko Shikatani, Hiroo Hayashi, Mitsuhiro Wada
  • Patent number: 5616395
    Abstract: A process for the production of a two-layer textile reinforcement for the production of bituminous sealing sheets for roofing consists first, from a first layer based on nonwoven cloth, in consolidating this nonwoven cloth by mechanical or hydraulic bonding and in thermostabilizing it. This first consolidated and thermostabilized layer is then assembled with a second mineral fiber layer, either by counter-gluing, or by needling, or by seam knitting. These two latter assembly methods are used only when the second mineral fiber layer is in the form of a grid or cloth of continuous or discontinuous mineral filaments. The first assembly method by counter-gluing is itself used no matter what the structure of the second mineral filament layer, whether it be in the form of a grid or a cloth of continuous or discontinuous mineral fibers or in the form of a scrim of mineral fibers.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: April 1, 1997
    Assignee: Freudenberg Spunweb S.A.
    Inventors: Jean Baravian, Ulrich Jahn, Robert Groten, Jean-Jacques Beck
  • Patent number: 5616391
    Abstract: The invention relates to a composite material comprising a three-dimensional textile structure which comprises at least two textile layers which are located at a mutual distance and which are mutually connected by looped-round pile threads, and at least one matrix with which at least this textile layer is provided, and a vapour/moisture-permeable textile layer contacting the body.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: April 1, 1997
    Assignee: K.U. Leuven Research & Development
    Inventors: Willem Amesz, Joris K. M. Van Raemdonck, Willy De Meyer, Ignace H. J. M. Verpoest
  • Patent number: 5614293
    Abstract: A soft uncreped throughdried tissue product is disclosed having uniformly distributed surface deposits of a chemical composition which imparts a benefit to the user, such as a reduction in skin irritation during use. Particularly suitable compositions are those which have a melting point of from about 30.degree. C. to about 70.degree. C. and which are applied to the outer surfaces of the tissue product in melted form, preferably by rotogravure printing. A suitable composition contains an oil, a wax, and preferably a fatty alcohol.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: March 25, 1997
    Assignee: Kimberly-Clark Corporation
    Inventors: Duane G. Krzysik, Theodore E. Farrington, Jr., Lee P. Garvey, Cynthia W. Henderson, Robert D. Sauer, Michael J. Smith, Michael C. Tuck
  • Patent number: 5614296
    Abstract: A method of producing self-texturing filaments that exhibit a desirable tendency to coil rather than to bend sharply or zig zag. The method includes directing a quenching fluid at extruded hollow filaments of a liquid polymer predominantly from one side of the hollow filaments to thereby produce hollow filaments with different orientations on each side. Thereafter the temperature of the hollow filaments is raised to a temperature sufficient for the filaments to relax, but less than the temperature at which the filaments would shrink. When the relaxed filaments are cut into staple lengths, they tend to assume a form that provides a favorable degree of mechanical entanglement that is useful in forming resilient solid structures.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: March 25, 1997
    Assignee: Wellman, Inc.
    Inventors: Fred L. Travelute, Robert E. Hoffman
  • Patent number: 5609936
    Abstract: A drying screen for paper making machines is described which comprises at least one layer of a thread composite and a thin glued-on, perforated or slit sheet i.e., with thermoplastic material-comprising filaments. The individual layers are preferably connected to one another in three layers and arranged one above the other, with the layer facing the paper web always being oriented in the direction of paper travel.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: March 11, 1997
    Assignee: Wurttembergische Filztuchfabrik D. Geschmay GmbH
    Inventors: Ernst Kohler, Bernd Sabrowski, Ulrich Altenhofen
  • Patent number: 5607735
    Abstract: A dust sock filter medium laminate is provided which has at least two nonwoven webs of microfibers which have an average diameter (using a sample size of at least 10) between about 10 and 25 microns and which webs have been joined by a method comprising the steps of (a) directing the component layers to a separation zone, (b) applying water in the amount of from about 5% to 25% based on the weight of the combined layers, (c) combining the component layers, (d) passing the combination through a sonic bonder operating within the range of up to about 40,000 cps against a patterned anvil to produce a corresponding pattern of thermal bond areas over about 3% to 25% of the surface area of the combination, and, (e) drying the sonically bonded combination.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: March 4, 1997
    Assignee: Kimberly-Clark Corporation
    Inventor: James P. Brown
  • Patent number: 5607760
    Abstract: A diaper containing a liquid pervious topsheet coated with a lotion composition is disclosed. The lotion composition reduces the adherence of BM to the skin of the wearer, thereby improving the ease of BM clean up, and improves skin softness. The lotion composition comprises a solid polyol polyester and an emollient to improve the lubricity of the solid polyol polyester. The polyol polyester(s) and emollient remains at or near the skin surface, providing the desired BM cleaning or therapeutic benefits.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: March 4, 1997
    Assignee: The Procter & Gamble Company
    Inventor: Donald C. Roe
  • Patent number: 5605760
    Abstract: A pad is provided for use on a machine for the polishing of silicon wafers which allows the use of optical detection of the wafer surface condition as the wafer is being polished. This accomplished by constructing the entire pad or a portion thereof out of a solid uniform polymer sheet with no intrinsic ability to absorb or transport slurry particles and which is transparent to the light beam being used to detect the wafer surface condition by optical methods. Polymers which are transparent to light having a wavelength within the range of 190 to 3500 nanometers are suitable for the construction of these pads.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: February 25, 1997
    Assignee: Rodel, Inc.
    Inventor: John V. H. Roberts
  • Patent number: 5605743
    Abstract: A industrial fabric of monofilament of polyphthalamide having recurring units including copolymerized hexamethylene diamine and mixtures of copolymerized terephthalic acid, isophthalic acid, and adipic acid. The monofilament has excellent hydrolysis, chemical, and abrasion resistance. It is particularly useful for the cloth in the forming and pressing sections of a papermaking machine.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: February 25, 1997
    Assignee: Asten, Inc.
    Inventor: John R. Reither
  • Patent number: 5604019
    Abstract: A tear resistant film comprises more than five layers situated one on the other in a parallel array. The layers are individually selected from a stiff polyester or copolyester, a ductile polymeric material, and optionally, an intermediate material. The stiff polyester or copolyester is oriented in at least one direction. Tear resistance may be measured in a Graves area test and reflects the ability of the film to absorb energy. The films of the invention are useful in many articles including security control laminates for glazing members.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: February 18, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ralph H. Bland, James M. Jonza, James D. Smith, Richard C. Allen, Jeffrey F. Bradley, Kenneth B. Smith, Bruce D. Stambaugh
  • Patent number: 5604024
    Abstract: Products of reaction of an aluminum compound (A), a boron-containing acid (B), a phosphorus-containing acid (P) and an amine (N) are characterized in that 1 mol of (A) has been reacted with from 0.3 to 1.19 mol of B, (from 1.8 to 2.19)+x mol of P and (from 0.3 to 3.69)+y mol of N, where x=from -1.5 to +1.5 and y=from 0 to 12. These reaction products may contain, if desired, up to 30 mol of water per mole of A employed and may be used in a very wide variety of ways, for example as binders, coating compositions or insulating material.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: February 18, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventor: Wulf von Bonin
  • Patent number: 5599614
    Abstract: A composite membrane is provided which includes a base material and an ion exchange resin. The base material has a microstructure characterized by nodes interconnected by fibrils, or a microstructure characterized by fibrils with no nodes present. The ion exchange resin substantially impregnates the membrane such that the membrane is essentially air impermeable.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: February 4, 1997
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Bamdad Bahar, Alex R. Hobson, Jeffrey A. Kolde
  • Patent number: 5597645
    Abstract: The present invention provides a filter medium, which contains an electretized nonwoven web of crimped fibers selected from the group consisting of spunbond filaments and staple fibers, wherein the nonwoven web has a Frazier permeability equal to or greater than about 100 ft.sup.3 /min/ft.sup.2 and a density between about 0.01 g/cm.sup.3 and about 0.095 g/cm.sup.3.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: January 28, 1997
    Assignee: Kimberly-Clark Corporation
    Inventors: Richard D. Pike, Richard M. Peterson
  • Patent number: 5595795
    Abstract: The present invention is a highly predictable composite usable to fabricate such structural articles as complex-shaped automotive body parts and building panels. Included in this composite is at least one netlike preform having a plurality of inter-crossed roving bound to each other at thermoset junction points. This preform is compressed into a mold, and at least one layer of polymer paste is added thereto. The preform layers and the polymer paste layers are compressed to the shape of the mold, and then they are heat and flame treated to complete the curing of the thermoset resin and to produce a desired surface finish.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: January 21, 1997
    Assignee: Netcom Technologies Corp.
    Inventor: Henry I. Alfred
  • Patent number: 5595807
    Abstract: A wipe for wetting and subsequently drying portions of the human body. The inventive device includes a wetting pad for applying a topical cleansing solution to a body part. An absorbing pad is coupled to the wetting pad for drying the cleansed body part subsequent to cleaning thereof.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: January 21, 1997
    Inventors: Robert B. Gooding, Jr., Kimberly Minor
  • Patent number: 5593768
    Abstract: The present invention provides a nonwoven fabric laminate comprising a thermally-bonded multiconstituent fiber nonwoven web. The multiconstituent fiber is composed of a highly dispersed blend of at least two different thermoplastic polymers which are present as a dominant continuous phase and at least one noncontinuous phase dispersed therein. The noncontinuous phase exists as an elongated fibrillar polymer domain oriented generally in the direction of the fiber axis. The polymer of the noncontinuous phase has a melting temperature below that of said continuous phase, and the lower melting noncontinuous phase comprises from about 2.5 to about 20 percent by weight of the fiber. The fabric laminate also comprises at least one other web bonded to the multiconstituent fibers of the thermally bonded nonwoven web and a multiplicity of thermal bonds formed from the polymer of said multiconstituent fibers and bonding the multiconstituent fibers of said thermally bonded web to said at least one other web.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: January 14, 1997
    Assignee: Fiberweb North America, Inc.
    Inventor: Scott L. Gessner
  • Patent number: 5593746
    Abstract: An improved thermally insulating batt particularly designed for use as filling material for winter apparel, quilts, sleeping bags and the like, is produced by first preparing carded webs consisting of natural or synthetic fibers, plying several webs to form a batt, and then subjecting this batt to a subsequent resin treatment, on at least one face thereof, by using specific cross-linked glues. The resin treated batt is then calendered, under controlled temperature and pressure conditions, so as to obtain, on its surface, a soft, resilient and heat-sensitive film and, in the interior, an air chamber so as to provide a low thermal exchange coefficient and a proper control of the body temperature.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: January 14, 1997
    Inventors: Lucio Siniscalchi, Marciano Siniscalchi
  • Patent number: 5589245
    Abstract: The textile spacer material is a material for replacing foamed substances; it consists of two knitted or woven covering layers that are connected by a pile thread structure. The pile thread structure produces the compressibility known from flexible foams and the large air fraction. The elasticity can be determined by the length and density of the pile threads and the material used. When recyclable materials are used, an environmentally compatible foam substitute can be obtained. Moreover, the textile spacer material can also assume chemical or physical properties through the use of treated starting material or a treatment during or after production and thus be used as a filter or catalyst material, for example.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: December 31, 1996
    Assignee: TECNIT-Technische Textilien und Systeme GmbH
    Inventor: Friedrich Roell
  • Patent number: 5589256
    Abstract: A method of producing easily densified high bulk fibers that have adhered particulates. The high bulk fibers have hydrogen bonding or coordinate covalent bonding functionalities, and a binder is applied to the fibers to bind the particles to the fibers. The binder has a functional group that forms a hydrogen bond or a coordinate covalent bond with the particles, and a functional group that forms a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: December 31, 1996
    Assignee: Weyerhaeuser Company
    Inventors: Michael R. Hansen, Richard H. Young, Sr.