Patents Represented by Attorney, Agent or Law Firm Andrew C. Siminerio
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Patent number: 6231533Abstract: One aspect of the present invention is an orthopedic splint for temporarily supporting an injured body limb, comprising: a non-woven mat at least partially impregnated with a curable resin matrix material; a first resin impermeable layer extending along at least a portion of at least one major surface of the mat; a second resin impermeable layer extending along at least along a portion of an opposing major surface of the mat; and a curing agent permeable cover surrounding the mat and the first and second resin impermeable layers. In one particular embodiment of the invention, the resin matrix material comprises a moisture curable, ambient air dried resin matrix material, the mat comprises a needled mat comprising randomly oriented continuous glass fibers and having a weight, prior to resin impregnation, of between about 0.15 to about 2.44 kilograms per square meter, the first resin impermeable layer is a heat insulating layer, and the cover is a water permeable cover.Type: GrantFiled: May 21, 1999Date of Patent: May 15, 2001Assignee: PPG Industries Ohio, Inc.Inventors: Bruce E. Novich, Walter J. Robertson
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Patent number: 6228496Abstract: The present invention provides a glass fiber strand comprising at least one glass fiber at least partially coated with a sizing composition prepared from ingredients comprising; at least one starch; at least one lubricant; and at least one silane coupling agent comprising: [((R1)bY)aR23-aSiR3]2NX, wherein R1 and R2 are each monovalent radials; R3 is a divalent linking group; a is 1 to 3; X is (R4)bZC(═O)CH(Q)CH(Q)—, wherein Z is CH2, O, S or N, Q is H, alkyl, aryl, alkaryl, or C(═O)ZR4 and R4 is a hydrocarbon moiety of one to twenty carbon atoms, hydrogen, a silyl group or an organic polymer; Y is oxygen, nitrogen or sulfur; and b is 1 or 2 depending upon the valency of Y. In one particular embodiment of the invention, the silane in the aqueous sizing composition is (CH3)3COC(═O)CH2CH2N[CH2CH2CH2Si(OCH3)3]2.Type: GrantFiled: May 26, 1999Date of Patent: May 8, 2001Assignee: PPG Industries Ohio, Inc.Inventors: Ernest L. Lawton, Michael L. Gunther, Eric R. Pohl
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Patent number: 6211280Abstract: The present invention provides aqueous coating compositions adapted to coat a fiber strand having thereon a sizing composition. The aqueous coating compositions include a urethane-containing polymer and a polymer prepared by addition polymerization of a monomer selected from the group consisting of acrylic acid, methacrylic acid and a mixture thereof. Also provided by the present invention are sized fiber strands coated with the secondary coating composition and composites reinforced with the same.Type: GrantFiled: October 19, 1998Date of Patent: April 3, 2001Assignee: PPG Industries Ohio, Inc.Inventor: Philip L. Schell
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Patent number: 6210703Abstract: A glass fiber chemical delivery system including water soluble fiberglass particles containing a chemical composition. The water soluble fiberglass particles may define pores in which the chemical composition is contained or the water soluble fiberglass particles may each define a hollow core containing the chemical composition. As the fiberglass particles dissolve in an aqueous environment, such as within cells of a blood vessel wall or in a reaction vessel, the chemical composition is released.Type: GrantFiled: December 19, 1997Date of Patent: April 3, 2001Assignee: PPG Industries Ohio, Inc.Inventor: Bruce E. Novich
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Patent number: 6199406Abstract: The present invention provides an apparatus for forming fiber strands comprising a fiber forming device, a gathering shoe device and a winder device, the improvement comprising a gathering shoe device which includes at least one gathering shoe having an annular groove for receiving the fibers from the fiber forming device, the gathering shoe having a generally circular cross section at the annular groove and a diameter at the annular groove ranging from about 2.54 to about 6.35 mm. Another aspect of the present invention is a gathering shoe comprising a rod member having a longitudinal axis; and a groove extending circumferentially about the rod member, wherein the rod member has a diameter at the groove in the range of about 2.54 to about 6.35 mm.Type: GrantFiled: April 14, 1999Date of Patent: March 13, 2001Assignee: PPG Industries Ohio, Inc.Inventor: Robert B. Rau
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Patent number: 6199778Abstract: Systems and processes of the present invention for recycling glass fiber waste into glass fiber product include a supply of scrap glass fibers having a mean average length of less than about 5 millimeters; a crusher having at least one pair of rotatable rollers which rotate at essentially the same speed, the rollers having intermeshing protuberances for crushing scrap glass fibers passing therebetween; and an air separating device for separating a first portion of crushed glass fibers having a mean average length of less than about 3 millimeters from a second portion of oversize glass fibers.Type: GrantFiled: November 6, 1996Date of Patent: March 13, 2001Assignee: PPG Industries Ohio, Inc.Inventor: Curtis L. Hanvey, Jr.
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Patent number: 6171984Abstract: This invention relates to generally to geosynthetic materials which can be used for earthen reinforcement, and more particularly to a novel geosynthetic material exhibiting less strain under an initial tensile load then presently available geosynthetic materials.Type: GrantFiled: December 3, 1997Date of Patent: January 9, 2001Assignee: PPG Industries Ohio, Inc.Inventors: John N. Paulson, Mikhail M. Girgis, Jeffrey A. Neubauer, Narasimhan Raghupathi
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Patent number: 6148641Abstract: An apparatus and method for producing dried, chopped strands from a supply of continuous fiber strands by the direct deposition of wet, chopped strands ejected from a chopping assembly into a drying chamber is disclosed. A transition chute is interposed between the chopping assembly and the drying chamber to guide the chopped strands to pass directly into the drying chamber.Type: GrantFiled: December 18, 1998Date of Patent: November 21, 2000Assignee: PPG Industries Ohio, Inc.Inventors: John R. Blough, Jerry B. Noftsger, Ronald L. Hawkins
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Patent number: 6114264Abstract: The present invention provides a glass composition having a neutral gray color and a luminous (visible) transmittance within a range that allows the glass to be used in the forward vision areas of a vehicle. The base glass is a soda-lime-silica composition and iron, cobalt, selenium and/or nickel are added as colorants. In one particular embodiment of the invention which is essentially nickel-free, a neutral gray colored glass with a luminous transmittance (C.I.E. illuminant A) of 60% and higher at a thickness of 3.9 millimeters may be attained by using as colorants: 0.30 to 0.70 wt. % Fe.sub.2 O.sub.3, no greater than 0.21 wt. % FeO, 3-50 PPM CoO and 1-15 PPM Se, and preferably 0.32 to 0.65 wt. % Fe.sub.2 O.sub.3, 0.065 to 0.20 wt. % FeO, 5 to 40 PPM CoO and 1 to 9 PPM Se. In an alternate embodiment of the invention which includes nickel oxide as a colorant, a neutral gray colored glass with a luminous transmittance of 60% and higher at a thickness of 3.9 millimeters may be attained by using 0.15 to 0.65 wt.Type: GrantFiled: March 31, 1995Date of Patent: September 5, 2000Assignee: PPG Industries Ohio, Inc.Inventors: John F. Krumwiede, Anthony V. Longobardo, Larry J. Shelestak
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Patent number: 6103650Abstract: The present invention provides a green colored, infrared and ultraviolet absorbing glass composition having a luminous transmittance of up to 60 percent. The glass composition uses a standard soda-lime-silica glass base composition and additionally iron, cobalt, chromium, and titanium, as infrared and ultraviolet radiation absorbing materials and colorants. The glass of the present invention has a color characterized by a dominant wavelength in the range of about 480 to 510 nanometers, preferably about 490 to 525 nanometers, with an excitation purity of no higher than about 20%, preferably about 5 to 15%. In one embodiment of the invention, the glass composition of a green colored, infrared and ultraviolet radiation absorbing soda-lime-silica glass article includes a solar radiation absorbing and colorant portion consisting essentially of about 0.90 to 2.0 percent by weight total iron, about 0.17 to 0.52 percent by weight FeO, about 40 to 150 PPM CoO, about 250 to 800 PPM Cr.sub.2 O.sub.3, and about 0.Type: GrantFiled: November 28, 1997Date of Patent: August 15, 2000Assignee: PPG Industries Ohio, Inc.Inventor: John F. Krumwiede
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Patent number: 6094942Abstract: The present invention provides a method of reducing tin defects in flat glass made by the float process. In the float process, molten glass is delivered onto a pool of molten tin within an enclosed chamber and formed into a glass ribbon. Oxygen gas dissolved in the molten tin combines with the tin to form tin oxide which vaporizes and collects within the chamber, resulting in defects in the glass. In the present invention, hydrogen gas is introduced directly into the molten tin to react with the oxygen gas and tin oxide within the molten tin to form water and elemental tin, resulting in a reduction in the amount of tin oxide within the molten tin. In one particular embodiment of the invention, the hydrogen gas is introduced into the molten tin through an elongated, porous graphite member submerged in the molten tin within the forming chamber such that it extends along and is located outboard of selected portions of the edge of the glass ribbon.Type: GrantFiled: June 13, 1997Date of Patent: August 1, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Charlene A. Falleroni, Donald L. DeSantis, Kevin G. Hill
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Patent number: 6087000Abstract: The present invention provides fiber strands having on at least a portion of surfaces thereof (a) a primary layer of a coating composition including a hydrophobic fluorine-containing polymer, the primary coated strands being useful for reinforcing thermoplastic composites, and (b) a secondary layer including a hydrophilic material applied over at least a portion of the primary layer, the secondarily coated strands being useful for inhibiting water wicking in a telecommunications cable assembly.Type: GrantFiled: December 18, 1997Date of Patent: July 11, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Mikhail M. Girgis, Philip L. Schell
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Patent number: 6076373Abstract: The present invention provides an apparatus and method for a shaping sheet including a support frame and a shaping rail supported on the frame. The shaping rail has a sheet shaping surface that conforms in elevation and outline to a final desired shape of a marginal edge of a glass sheet to be shaped. An auxiliary rail having a sheet shaping surface which generally corresponds to a preliminary shape of a selected marginal edge portion of the sheet is positioned along a section of the shaping rail having a sheet shaping surface portion which generally corresponds to the final desired shape of the selected marginal edge portion of the sheet.Type: GrantFiled: June 16, 1997Date of Patent: June 20, 2000Assignee: PPG Industries Ohio, Inc.Inventor: Zenon Grodziski
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Patent number: 6051315Abstract: The present invention provides an optical fiber cable assembly including an optical fiber and a reinforcement strand including a plurality of sized glass fibers positioned about the optical fiber, the strand having thereon a dried residue of a secondary aqueous coating composition which is essentially free of a urethane-containing material and includes a first polymer prepared by vinyl addition polymerization of a first monomer component including a first vinyl aromatic monomer and an acrylic monomer and a second polymer different from the first polymer, the second polymer being prepared by vinyl addition polymerization of a second monomer component including a curable polymer of a second vinyl aromatic monomer, wherein the surface of the strand wicks water at a rate of less than about 25.4 millimeters (one inch) in about six hours at a temperature of about 25.degree. C. A method of reducing the wicking of water along the surface of a glass fiber strand is also provided.Type: GrantFiled: February 4, 1998Date of Patent: April 18, 2000Assignee: PPG Industries Ohio, Inc.Inventor: Mikhail M. Girgis
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Patent number: 6051314Abstract: The present invention provides aqueous secondary coating compositions adapted to coat a sized fiber strand, the compositions including a urethane-containing polymer and a blend of a halogenated vinyl polymer and an elastomeric polymer. Another aspect of the present invention is a generally tubular assembly having a reinforcement coated with a primary layer of a sizing composition including a fiber lubricant which provides the assembly with an electrical resistance of greater than about 750 megaohms per 152.+-.13 millimeters of length of the assembly and a secondary layer including a halogenated vinyl homopolymer and a urethane-containing polymer. Another aspect of the present invention is a fiber strand formed from a thermoplastic or thermosetting material having a primary layer including a halogenated vinyl homopolymer and a urethane-containing polymer. The present invention also includes strands coated with the above-discussed coatings and polymeric composites and assemblies reinforced with the same.Type: GrantFiled: May 8, 1997Date of Patent: April 18, 2000Assignee: PPG Industries Ohio, Inc.Inventor: Mikhail M. Girgis
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Patent number: 6044666Abstract: An insulating flow block having a plurality of bores extending therethrough to permit the flow of molten fiberizable material through the block, a bushing assembly having a bushing block with one or more bores extending through a peripheral region thereof to divert a portion of a supply of molten fiberizable material from a central region of the bushing block to the peripheral region of the bushing block, and a bushing positioned in general registry with the bore of the peripheral region of the bushing block to facilitate the flow of molten fiberizable material to a peripheral region of the bushing is disclosed.Type: GrantFiled: May 12, 1998Date of Patent: April 4, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Gerard J. Burger, Dennis S. Postupack, Robert A. Roach, James W. Koewing
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Patent number: 6043782Abstract: The present invention provides a connector assembly for electrically connecting to an electroconductive element having an electroconductive connector with a generally flat pad portion, a terminal portion capable of connecting the assembly to an external device and connecting portion interconnecting the pad and terminal portions, and a preformed plug member sized to a predetermined configuration and overlaying the pad portion such that a major surface of said pad portion is exposed along a first surface of the plug member. The exposed surface may be covered with an adhesive and in one embodiment of the invention, the connecting portion extends through the plug member. The plug member is preferably an electrically nonconductive and moisture impervious material.Type: GrantFiled: December 18, 1995Date of Patent: March 28, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Peter T. Dishart, David T. Perry, Randy R. Kadunce, Robert N. Pinchok, Jr., Robert T. Shumaker, Jr.
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Patent number: 6042305Abstract: The present invention provides semi-solid and reinforced soil mixtures formed from aqueous soil mixtures such as dredge material, discrete reinforcing fibers such as glass fibers. The reinforced mixtures can include additives for partially solidifying the aqueous soil mixture, such as calcium-containing materials, cementitious materials, silicon-containing materials, aluminum-containing materials and mixtures thereof. The pH of the reinforced soil mixture can be adjusted to control deterioration of the reinforcing fibers, as desired.Type: GrantFiled: August 15, 1997Date of Patent: March 28, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Bruce E. Novich, Ali Maher, Jeffrey A. Neubauer
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Patent number: 6029477Abstract: The present invention provides a system for producing glass fiber product from scrap glass fibers comprising at least one crusher having at least one pair of rotatable rollers which rotate at essentially the same speed, the rollers having intermeshing protuberances for crushing scrap glass fibers passing therebetween; a dryer for drying the crushed glass fibers to form dried glass fibers having a mean average moisture content of less than about one weight percent; and a separating device for separating the crushed glass fibers into (1) a first portion of crushed glass fibers having a mean average length of less than about 5 millimeters and (2) oversize dried waste material.Type: GrantFiled: October 13, 1998Date of Patent: February 29, 2000Assignee: PPG Industries Ohio, Inc.Inventor: Curtis L. Hanvey, Jr.
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Patent number: 6025025Abstract: The present invention relates to a method of improving the durability of water-repellent films deposited on the surface of a substrate and to a coated article having a water-repellent film of improved durability deposited on the substrate surface. The method includes the steps of simultaneously abrasively and chemically preparing the surface to expose an increased number of bonding sites on the substrate surface by applying a dispersion including an acid solution and an abrasive material to the surface. The dispersion is then removed and the water-repellent film is formed over the prepared surface. The bonding sites react with the water-repellent film to more effectively bond the film to the substrate and thereby improve the durability of the water-repellent film.Type: GrantFiled: June 10, 1998Date of Patent: February 15, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Bruce A. Bartrug, George B. Goodwin, Chia-Cheng Lin