Static Electricity Metal Bleed-off Metallic Stock Patents (Class 428/922)
  • Patent number: 6245694
    Abstract: Automotive bedliners (e.g., for pickup trucks) are formed from a sheet of thermoplastic material having electrically conductive fibers embedded in a surface thereof in an amount sufficient to render said sheet electrically conductive. The bedliners are most preferably formed of a thermoplastic material (e.g., a polyolefin, such a polyethylene and/or polypropylene) having a matrix of electrically conductive fibers physically embedded in at least one side thereof. By physically embedding the conductive fibers in a surface of the bedliner, the fibers are capable of establishing electrical continuity between the bedliner and the pickup truck bed thereby effectively dissipating static electrical charges.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: June 12, 2001
    Assignee: Shakespeare Conductive Fibers, LLC
    Inventors: Grover L. Davenport, Wayne S. Stanko, Allen Ray, Everett C. Cox, Michael A. Davis, Gary M. Carnes
  • Patent number: 6228288
    Abstract: The present invention is a polymer film conductive composition comprising, based on total composition: (a) 3-20 wt. % of polyamide-imide resin; (b) 0-10 wt. % cyanate ester resin; (c) 40-85 wt. % finely divided metallic electrically conductive particles selected from the group consisting of silver, copper, nickel, silver coated copper, silver coated nickel, carbon black, graphite and mixtures thereof, wherein all of (a), (b) and (c) are dispersed in a 20-40 wt. % organic solvent.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: May 8, 2001
    Assignee: CTS Corporation
    Inventor: Antony P. Chacko
  • Patent number: 6224975
    Abstract: An opaque pressure sensitive adhesive (PSA) sheet or tape article, which comprises an anti-static coating on one side of a polymeric base film and an adhesive coating on the other side of the base film which can be opaque or transparent. If the base film is transparent, an opaque adhesive is coated onto the film to make it opaque. However, a clear adhesive can be coated onto the base film to make an opaque pressure sensitive adhesive tape if the base film itself is opaque. The total thickness of the pressure sensitive-tape ranges from about 0.4 mil to about 1.8 mil with a base film thickness no greater than about 1.4 mil. The pressure sensitive tape should have an opacity of greater than or equal to about 70%. The resistivity of the prepared sheet having an anti-static coating layer thereon should not be larger than about 1012&OHgr;/SQ.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: May 1, 2001
    Assignee: Arkwright, Incorporated
    Inventor: Yongzhong Wang
  • Patent number: 6214451
    Abstract: The invention relates to an antistatic resin molded article which comprises a thermoplastic resin substrate and an antistatic resin layer applied to the surface of the resin substrate. The antistatic resin layer is formed of a coating layer produced by dispersing conductive and extremely fine carbon long-fibers in the thermoplastic resin thereby holding the antistatic properties and enabling thermoforming. As the extremely fine carbon fiber, a pilled fiber aggregate composed of fibers with a fiber diameter of 3.5 to 500 nm and an aspect ratio of 100 to 3000 or an agglomerate in which the aggregates are agglomerated is used.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: April 10, 2001
    Assignee: Takiron Co., Ltd.
    Inventors: Makoto Ihira, Masato Sakai
  • Patent number: 6200914
    Abstract: An electrically poorly conductive material for producing external glow-discharge protection for an electrical conductor, includes a base material which is provided with a conductive coating on at least one side. In order to ensure adequate external glow-discharge protection and cost-effective production of an insulating sleeve, even for high rated voltages, the conductive coating is produced essentially from carbon, which has microcrystalline and amorphous structures.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: March 13, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventor: Michael Schulten
  • Patent number: 6171707
    Abstract: Polymeric film may be provided with an antistatic coating comprising an oleophilic polymeric film forming binder and a fluorinated ionic polyoxyalkylene antistatic agent in an organic solvent system. The coated film base with the antistatic layer is particularly useful in preventing static problems in photothermographic elements when thermally developed in heated rollers.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: January 9, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Charles W. Gomez, Steven R. Austin
  • Patent number: 6143418
    Abstract: A transparent conductive film having a transparent conductive layer containing at least two types of metals wherein the film is high in transparency, tonability, and conductivity, and provides for static prevention and electromagnetic shielding effects, enables adjustment of the tone of transmitted images, and has durability with respect to saline resistance, acid resistance, oxidation resistance, and ultraviolet resistance.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: November 7, 2000
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Naoki Takamiya, Yasunori Kunimitsu, Kenji Adachi, Kazutomo Mori, Ichirou Noda, Atsumi Wakabayashi
  • Patent number: 6027802
    Abstract: A cover tape adapted to seal individual components in respective recesses of a carrier tape or a two dimensional carrier tray, including a randomly embossed layer, an adhesive layer covered over one side of the randomly embossed layer, and a non-adhesive layer adhered to the adhesive layer to prevent the components from adhering to the adhesive layer, the randomly embossed layer including an adhesion portion adapted for fastening to the carrier tape through the adhesive layer, a torn strip portion adapted to enhance the cohesive strength of the randomly embossed layer through the non-adhesive layer, and a stress concentration zone disposed between the contact border line of the adhesion portion and the contact border line of the non-adhesive layer, the torn strip portion being peeled off from the adhesion portion along the stress concentration zone before the removal of the encased components from the carrier tape, the applied tearing force to peel off the torn strip portion from the adhesion portion along th
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: February 22, 2000
    Assignee: Four Piliars Enterprise Co., Ltd.
    Inventor: David Lin
  • Patent number: 5998014
    Abstract: Thermally and mechanically formable polymer film, characterised by a transparent antistatic coating of a mixture of 3,4-polyethylene dioxythiophene with a thermally or mechanically formable binder, its production and its use for packaging electronic components.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: December 7, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harry Muller, Dirk Schultze, Friedrich Jonas, Klaus Lerch, Hans Weber
  • Patent number: 5958537
    Abstract: Static dissipative labels are described which comprise a polyester or polyimide backing film laminated to a conductive primer layer which in turn is laminated to a pressure-sensitive adhesive layer. The primer layer and adhesive layer contain conductive particles, e.g. metals, and the conductive particles in the adhesive layer are arranged such that they span the thickness of the layer.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: September 28, 1999
    Assignee: Brady USA, Inc.
    Inventor: Sohail Akhter
  • Patent number: 5914188
    Abstract: A membrane formed by coating an aqueous coating liquid comprising an antistatic agent or anticlouding agent on one or both surfaces of an aliphatic polyester film comprising a specific amount of a lubricant or an antiblocking agent, can remarkably improve adhesion of the membrane (antistatic layer or anticlouding layer) to the aliphatic polyester film, and thus the effect of the membrane (antistatic effect or anticlouding effect) can be continuously exhibited for a long period.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: June 22, 1999
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Naoki Kobayashi, Shuhei Ikado, Akira Kawano, Takayuki Kuroki, Hirotaka Wanibe
  • Patent number: 5908585
    Abstract: A transparent electrically conductive film having a surface resistivity of 10.sup.2 -10.sup.10 .OMEGA./.sup..quadrature., an overall light transmittance of at least 70%, and a haze value of at most 20% comprises an organic or inorganic transparent matrix having dispersed therein 0.01%-1 wt % of hollow carbon microfibers and 1%-40 wt % of an electrically conductive metal oxide powder (such as antimony-doped tin oxide) with an average primary particle diameter of 0.5 .mu.m or smaller. The matrix can be an organic polymer which is thermoplastic, thermosetting, or curable by ultraviolet radiation, or a metal oxide sol which can form an inorganic glass film, a hydrolyzable or heat decomposable organic metal compound, or the like.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: June 1, 1999
    Assignees: Mitsubishi Materials Corporation, Hyperion Catalysis International, Inc.
    Inventor: Daisuke Shibuta
  • Patent number: 5902678
    Abstract: A pressure-sensitive adhesive or pressure-sensitive adhesive tape for removing a foreign matter present on the surface of an article from the article, the pressure-sensitive adhesive having the property of curing with an actinic energy source to have a three-dimensional network molecular structure, a modulus of elasticity (as measured in accordance with JIS K 7127) before the curing of lower than 1 kg/mm.sup.2 and a modulus of elasticity after the curing of 1 kg/mm.sup.2 or higher, and a degree of volumetric shrinkage through the curing of 2% or higher.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: May 11, 1999
    Assignee: Nitto Denko Corporation
    Inventors: Yukari Konda, Kazuyuki Miki
  • Patent number: 5895607
    Abstract: An electrically conductive casing for an electronic device comprising a molded article which is comprised of a fiber-reinforced plastic composition comprising carbon fiber and polyamide, said polyamide comprising semi-aromatic polyamide and aliphatic polyamide in a weight ratio of 10:90 to 90:10, wherein said semi-aromatic polyamide is a polymer of an aromatic diamine and an aliphatic dicarboxylic acid.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: April 20, 1999
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Morihiko Sugino, Yasuo Hirano, Yoshiteru Sese, Naoki Kikuchi, Kei Takara
  • Patent number: 5876847
    Abstract: A coated substrate having a material substrate, and a coating composition fixed to a surface of the material substrate as a surface layer, the surface layer containing a hydrophilic resin which swells water but is not washed off by water, and which is solid in air at ambient temperatures that are encountered when said coated substrate is functioning as a reusable printing sheet and from which surface layer prior printing deposits can be readily removed, and when which the coated substrate has a surface resistivity of to 10.sup.5 to 10.sup.13 .OMEGA./.quadrature. at 25.degree. C., 50% RH after being dipped in water for 5 minutes and dried with a hot air of 60.degree. to 90.degree. C. for 5 minutes.
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: March 2, 1999
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Hiroyuki Mitsuhashi, Kenji Kohno, Kazushi Miyata
  • Patent number: 5846652
    Abstract: A cover material has a biaxially oriented resin layer, a heat sealant layer in which an electrically conductive fine powder composed mainly of barium sulfate particles surfaces of which are coated with tin oxide doped with antimony is dispersed in a thermoplastic resin, and an intermediate layer. The intermediate layer comprises 30 to 50% by weight of an ethylene-.alpha.-olefin copolymer having a density of from 0.915 to 0.940 g/cm.sup.3, and 70 to 50% by weight of a styrene-butadiene block copolymer composed of 50 to 90% by weight of styrene and 50 to 10% by weight of butadiene. A carrier tape having a plurality of embossed portions is made of a polycarbonate sheet containing from 5 to 30% by weight of electrically conductive carbon fine particles. A taping apparatus is produced by heat-sealing the above cover material to the above carrier tape so as to cover the embossed portions.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: December 8, 1998
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Rikiya Yamashita
  • Patent number: 5846621
    Abstract: A flexible carrier tape for storage and delivery of components by an advancement mechanism, comprises a strip portion, a plurality of aligned pockets spaced along the strip portion for carrying the components, a layer of a static dissipative acrylic polymer on the strip portion, and a cover releasably, adhesively bonded to the strip portion and covering the plurality of pockets. The acrylic polymer may also be used to reduce the temperature at which the cover is bonded to the strip portion.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: December 8, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Hideki Nagamatsu
  • Patent number: 5780127
    Abstract: A dimensionally stable and static dissipative carrier for semiconductor wafers or magnetic storage disks that has exceptionally low particle generation characteristics. The carrier having opposing side walls and connecting walls, the side walls having ribs defining slots for axial arrangement of the disks or wafers. The side walls, ribs, and end walls are all integral and formed of injection molded polybutyl terephtahalate (PBT) with sufficient carbon fiber filler for a surface resistivity less than 10.sup.12 ohms per square.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: July 14, 1998
    Assignee: Flouroware, Inc.
    Inventor: Kirk J. Mikkelsen
  • Patent number: 5763069
    Abstract: Electrically conductive tape yarns of two or more layers comprising thermoplastic polymer resin and electrically conductive particles, a process for making such tapes and fabrics comprising such tape yarns are disclosed.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: June 9, 1998
    Assignee: Amoco Corporation
    Inventor: Erich Gebhard Jordan
  • Patent number: 5705099
    Abstract: Disclosed are a resistive paste that can be fired in a neutral or reducing atmosphere to give a resistor having a high sheet resistivity value and a satisfactory TCR value even on low-temperature-sintering substrates, a resistive material composition that constitutes the resistive paste, and also a resistor that is formed from the resistive paste to realize a high sheet resistivity value and a satisfactory TCR value. A first resistive material of Ca.sub.x Sr.sub.1-x RuO.sub.3 (where x is from about 0.25 to 0.75 mols), a second resistive material of La.sub.y Sr.sub.1-y CoO.sub.3 (where y is from about 0.40 to 0.60 mols) and titanium oxide (TiO.sub.2) are mixed, and a non-reducible glass frit and an organic vehicle are added thereto to form the resistive paste.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: January 6, 1998
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Keisuke Nagata, Hiroji Tani
  • Patent number: 5702809
    Abstract: The aqueous composition for antistatic layer according to the invention comprises vanadium pentoxide and a polyurethane which includes no sulfonated groups and which is stable in an acidic medium, the weight ratio of vanadium pentoxide to polyurethane preferably being between 1:200 and 5:1. Polymeric supports coated with such a composition can be used for transparencies for photocopy, for mounting supports in the field of printing, or in photographic or magnetic products and in packaging.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: December 30, 1997
    Assignee: Eastman Kodak Company
    Inventors: Jean-Pierre Tixier, Annie Francoise Armande Legrand
  • Patent number: 5681635
    Abstract: An improved magnetic-recording disk and a process for manufacturing magnetic-recording disks are disclosed. An electrically conductive hard coating is deposited upon a ceramic substrate. This coating can be one from the group including the nitrides, carbides, and borides of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, or tungsten. Graded interfacial diffusion or pseudo-diffusion layers are formed between the ceramic substrate and the coating by the elemental metal present in the coating. Magnetic-recording media is then deposited upon the electrically conductive coating. Optionally, a texturable coating that is softer than the hard coating can be placed over the electrically conductive hard coating before the magnetic-recording media is deposited. This texturable coating limits the depth to which abrasive tape texturing can take place.
    Type: Grant
    Filed: January 20, 1994
    Date of Patent: October 28, 1997
    Assignee: Tulip Memory Systems, Inc.
    Inventors: Carl W. Nelson, Richard D. Weir, Richard S. Weir
  • Patent number: 5670254
    Abstract: High clarity, tear resistant, static dissipative cover tapes for two-piece surface mount device packaging tapes are described comprising of backing film, e.g. a polyester film, one side of which is coated with a thin layer of heat-sealable adhesive, e.g. an adhesive comprising a styrenic block elastomer, and the other side of which is coated with an organic antistatic agent. The cover tapes of this invention can be used with carrier tapes made from a variety of materials, e.g. polystyrene, polyvinyl chloride, polycarbonate, etc., and demonstrate a consistent peel force of between about 10 and about 120 grams.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: September 23, 1997
    Assignee: Brady Precision Tape Co.
    Inventor: Sohail Akhter
  • Patent number: 5665274
    Abstract: A spacecraft includes a spacecraft element, such as a deployable antenna, and a black paint on the spacecraft element. The paint has a composition of 100 parts by weight of a methyl phenyl silicone-based polymer, and from about 1.35 to about 3.5 parts by weight of an electrically conductive carbon pigment having a porous, sponge-like structure. The paint is applied by mixing these constituents with a solvent such as naphtha or xylene in an amount sufficient to permit the paint to be applied by a selected technique such as brushing or spraying.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: September 9, 1997
    Assignee: Hughes Aircraft Company
    Inventors: Lynn E. Long, Martin R. Gallardo
  • Patent number: 5650208
    Abstract: A laminated window includes at least one rigid external substrate (5) and a sheet made of flexible plastic material (6) which is adjacent to the substrate (5). The window is equipped with an electrostatic protection circuit which is capable of dissipating the charges which have accumulated on the external sheet (7). This circuit includes conducting elements (2) which cross through at least the substrate and at least one part of the sheet made of plastic material (6). The conducting elements (2) are connected to a collector element (3) which is connected to the ground (4) and embedded in the sheet made of flexible plastic material (6).
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: July 22, 1997
    Assignee: Saint-Gobain Vitrage
    Inventors: Pierre Chaussade, Thierry Mannevy-Tassy
  • Patent number: 5618470
    Abstract: An electrically conductive paste effectively protects copper powder from oxidation and provides good solderability and terminal strength. It is composed of a copper powder, a glass frit in an amount of 2-20 wt % of the copper powder, an organic vehicle in an amount of 10-30 wt % of the solid component (the copper powder and glass frit), and a solution of a borate ester having a high boiling point, a solution of boric acid, a solution of an organic salt of boron, and a solution of a borate ester having a low boiling point in an alcohol having a high boiling point, the amount of the solution being 0.01 to 0.5 wt % in terms of boron and based on the copper powder.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: April 8, 1997
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Tsuyoshi Yamana
  • Patent number: 5614318
    Abstract: The present invention is a bonding anchor coating agent and a laminated film having an anchor coating layer which provides a high anti-static performance on a film surface without having to mix the anti-static agent into the basic material of the film. The bonding anchor coating agent contains polyethylene imine and a bridge formation polymer having the ability to prevent electrostatic induction. The laminated film contains the anchor coating agent in the basic material of the film.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: March 25, 1997
    Assignee: Altech Company Limited
    Inventor: Kanji Hayashi
  • Patent number: 5599621
    Abstract: High clarity, tear resistant, static dissipative cover tapes for two-piece surface mount device packaging tapes are described comprising of backing film, e.g. a polyester film, one side of which is coated with a thin layer of heat-sealable adhesive, e.g. an adhesive comprising a styrenic block elastomer, and the other side of which is coated with an organic antistatic agent. The cover tapes of this invention can be used with carrier tapes made from a variety of materials, e.g. polystyrene, polyvinyl chloride, etc., and demonstrate a consistent peel force of between about 10 and about 120 grams.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: February 4, 1997
    Assignee: Brady Precision Tape Co.
    Inventor: Sohail Akhter
  • Patent number: 5595801
    Abstract: A shielding system for an enclosure wherein strips of shielding material including a layer of metal, for example, metal foil or gauge metal, are placed on the walls of the enclosure in an overlapping or abutting relationship, with shielding tape between the overlapped portions or overlying the butted seam. The shielding tape preferably consists of an electrically conductive nonwoven mat of entangled fibers which is laminated on one side to metal foil and which is bonded on the other side to the metal substrates using nonconductive adhesive. The entangled fibers penetrate the nonconductive adhesive and contact the surface of the metal substrate to provide an electrical continuity that seals the seam against leakage of electromagnetic radiation.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: January 21, 1997
    Assignee: International Paper Company
    Inventors: Lawrence J. Fahy, Peter J. Angelini, David A. Diermeier, John Marconi
  • Patent number: 5589274
    Abstract: An article includes a substrate having a thermal control coating formed of 1 part by weight of a silicone polymeric matrix having from about 8 to about 4 parts by weight aluminum-doped zinc oxide pigment particles distributed therein. The article may be either relatively thick or flexibly thin, and the coating may be greater than 0.0015 inches thick so as to have a low solar absorptance. The coating has an absorptance of about 0.2-0.3 and an emittance of about 0.9, and is sufficiently electrically conductive to dissipate electrostatic charges.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: December 31, 1996
    Assignee: Hughes Electronics
    Inventors: Lynn E. Long, Joan L. Lum
  • Patent number: 5587110
    Abstract: A composition which is capable of imparting electrical conductivity and non-tackifying property, comprising (A) a carbon fluoride in which a ratio F/C of fluorine atom to carbon atom is more than 0.5 and less than 1.0 and (B) at least one selected from the group consisting of a thermoplastic resin, a thermosetting resin and a rubber, a paint composition containing the same, and a semi-electrically conductive roller for electrostatic copying machine having an electrically resistive layer formed from the composition.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: December 24, 1996
    Assignee: Daikin Industries, Ltd.
    Inventors: Masayuki Yamana, Tomohiro Isogai
  • Patent number: 5569541
    Abstract: A modified plastic film in the form of a plastic film provided on both its surfaces with ionizing radiation cured resin layers having a hardness equal to or harder than a pencil hardness of H and a recording material formed with the modified plastic film as a substrate, wherein rippling during storage in high humidity or caused by heat is markedly reduced.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: October 29, 1996
    Assignee: Kimoto Co., Ltd.
    Inventors: Yoshihisa Kimura, Toshinori Kido, Takashi Shimizu
  • Patent number: 5554426
    Abstract: Multilayer plastic pipes having at leastI. a layer based on a molding composition of polyamide; andII. a layer adjacent to layer I and based on a molding containing a mixture of(a) from 97.5 to 50% by weight of polyvinylidene fluoride; and(b) from 2.5 to 50% by weight of an acrylate copolymer,with the layers adhering to one another, are provided. These pipes exhibit improved resistance to chemical agents such as, methanol-containing fuels, without the loss of typical properties of polyamide and polyvinylidene fluoride.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: September 10, 1996
    Assignee: Huels Aktiengesellschaft
    Inventors: Stefan Rober, Hans Jadamus, Hans Ries
  • Patent number: 5545250
    Abstract: The disclosure relates broadly to a new class or type of electroconductive powders (ECP), designated as Polytype ECP (PECP), comprising intimate mixtures of several types of ECP powders. PECP mixtures possess a lower electrical resistivity, or a higher electroconductivity, than would be expected from the weighted average of the component ECP powders. PECP are multi-component and may contain many different types of ECP. ECP components of the PECP can be selected from at least one member of the group consisting of crystallites of tin oxide containing antimony in solid solution, crystallites of antimony-containing tin oxide with uniformly distributed amorphous silica, two dimensional networks of crystallites of antimony-containing tin oxide in a unique association with amorphous silica or silica-containing material, filler materials, metal coated powders, conventional ECP materials such as carbon, aluminum powder, among others.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: August 13, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Oswald R. Bergmann, Carl Chen, Howard W. Jacobson
  • Patent number: 5543191
    Abstract: Composite pressure sensitive label sheets will print in hot laser printers without curling if they comprise at least three layers: A. at least one base layer having a pressure sensitive adhesive on the bottom face, B. a printable surface layer on top of the base layer or layers, and C. a strippable protective backing on the pressure sensitive adhesive coated bottom face on the base layer or layers and if the thermal expansion or contraction characteristics of the printable layer B and the protective backing C are the same or substantially the same.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: August 6, 1996
    Assignee: Peter J. Dronzek, Jr.
    Inventors: Peter J. Dronzek, Jr., Roger H. Sedran, Brian K. Burke
  • Patent number: 5516546
    Abstract: A polymerizable (meth)acrylate system which can be cured at ambient temperature to provide a conductive floor coating or shaped article. The composition comprises (meth)acrylates and optionally other monomers and other components such as pre-polymers, plasticizers, customary additives etc., in combination with amorphous or spheroidal graphite and/or carbon fibers and/or finely divided metal. Other fillers may be added. In particular, amorphous natural graphite, preferably having the particle size 20 to 1000 .mu.m, is suitable. Coatings prepared in this way fulfill the requirements in respect of DIN 51 953.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: May 14, 1996
    Assignee: Degussa Aktiengesellschaft
    Inventors: Siegfried Hari, Dietrich Wenk
  • Patent number: 5496633
    Abstract: A transfer film having a magnetic layer consists essentially of a substrate film, a parting layer and a transfer layer which is detachable from the said parting layer and is formed by one or more magnetic layers, and, on that side of the magnetic layer which faces the substrate film, after detachment of the substrate film, the surface-forming layer consists of a top layer which contains inorganic pigments in a cross-linked polymer matrix and has a thickness of from 0.2 to 5.0 .mu.m and a surface resistance of from 10.sup.-1 to 10.sup.-8 ohm/cm.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: March 5, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Steuerwald, Manfred Ohlinger, Jenoe Kovacs, Dieter Schwarz
  • Patent number: 5494755
    Abstract: The present invention relates to a tape for seaming together RF shielding thermal blankets of the kind used for covering the metal components of high power RF transmit and receive communications systems which are susceptible to generating passive intermodulation products, such as the high power transmit antenna boom assemblies of communications spacecraft. The tape is constructed as a composite lay-up of materials which preferably include a plastic film top or outboard layer, a metallized plastic film or metal foil middle layer, and a transfer adhesive bottom layer for securing the middle layer to the outboard layer. The transfer adhesive functions both as a substrate attaching medium and as an electrical isolator for encapsulating the metal surfaces of the middle layer.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: February 27, 1996
    Assignee: Lockheed Missiles & Space Co., Inc.
    Inventor: Thomas E. McCloskey
  • Patent number: 5491013
    Abstract: An electrostatic dissipating packaging tape is disclosed that comprises a transparent substrate, a substantially transparent adhesive layer on one surface of the substrate, and a clay coating on the opposite surface of the substrate from the adhesive. The clay is characterized by being able to provide a surface resistivity of 10.sup.14 ohms per square or less when present on a surface in amounts that are low enough to remain transparent, and the clay is present on the substrate surface in an amount sufficient to provide the coating with a surface resistivity of 10.sup.14 ohms per square or less, but less than an amount that would substantially reduce the transparent optical properties of the packaging tape.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: February 13, 1996
    Assignee: Rexam Industries Corp.
    Inventor: Leonard Holley
  • Patent number: 5478616
    Abstract: A weldable and/or heat-sealable, single- or multilayer film having at least one weldable and/or heat-sealable layer, the weldable and/or heat-sealable film being provided on at least one side on one outer surface with an antistatic coating, wherein the antistatic coating has a thickness of from about 0.005 to about 0.08 .mu.m and comprises at least about 60% by weight of a soluble, intrinsically electroconductive polymer which comprises structural units of the formula ##STR1## in which R.sup.1 is a C.sub.1 - to C.sub.12 - or a C.sub.6 - to C.sub.30 -alkoxy group, and which has a degree of polymerization of less than about 100, where the polymer or oligomer is in oxidized form and has an appropriate number of anions to compensate for the positive charge. These films are heat-sealable, in spite of their antistatic coating.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: December 26, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karl-Heinz Kochem, Michael Schmidt
  • Patent number: 5478644
    Abstract: A laminated polyester film comprising a polyester film and a layer comprising an antistatic agent and formed on at least one side of the polyester film, the antistatic agent being a high-molecular-weight antistatic agent having a nitrogen atom-containing group and a sulfonic acid or sulfonate group.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: December 26, 1995
    Assignee: Diafoil Hoechst Company, Limited
    Inventor: Jun Takahashi
  • Patent number: 5474822
    Abstract: A plastic pipe having improved resistance, inter alia, to methanol-containing fuels and improved mechanical properties comprising:(I) an outer layer made of a moulding compound based on polyamide,(II) an intermediate layer adjacent to the outer layer and made of a moulding compound based on a mixture of:(a) of from 95 to 99% by weight of a linear crystalline polyester, and(b) of from 1 to 5% by weight of a compound having at least two isocyanate groups,wherein the isocyanate groups originating from component (IIb) are present in the mixture of (IIa) and (IIb) in a concentration of from 0.03 to 0.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: December 12, 1995
    Assignee: Huels Aktiengesellschaft
    Inventors: Stefan Rober, Hans Jadamus, Michael Boer, Roland Feinauer, Hans-Dieter Herrmann, Hans Ries
  • Patent number: 5472754
    Abstract: A multilayer synthetic material tube manufactured by co-extrusion and adapted to convey motor vehicle fuel, from the inside towards the outside, a layer of high-density polyethylene, a layer of polyethylene, comprising acrylic acid and/or maleic anhydride copolymer adhesive, and an outer layer of polyamide.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: December 5, 1995
    Assignee: Nobel Plastiques
    Inventors: Jean-Claude Douchet, Patrick Desbois
  • Patent number: 5449554
    Abstract: In a molecule of a monomolecular film, a metal complex is introduced to form an antistatic film. This film is desirably transparent, durable, extremely thin and weakly conductive.The method of manufacturing an antistatic film involves (i) exposing a substrate with an active hydrogen atom thereon to a chemical adsorbent containing a straight carbon-chain group with a silyl group at one end and a phosphonate or carboxyl group at the other end to form a chemically adsorbed monomolecular film, and (ii) soaking the monomolecular film in a solution of a metal salt to form a film containing a complex of the metal element. An antistatic multi-monomolecular film can also be formed by laminating the monomolecular films using hydroxyl groups each bonding to the metal element in each monomolecular film.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: September 12, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kazufumi Ogawa
  • Patent number: 5447791
    Abstract: Submicron to micron sized conductive particles, on the order of 0.05 to 5 micron in average particle diameter, are produced using a semisuspension polymerization process in which the aqueous phase of the suspension contains an inorganic salt such as potassium iodide. The inorganic salt inhibits the formation of polymer particles that do not contain conductive filler so as to be non-conductive. The process also allows for conductive filler to be added at the start of the process. Powder coatings made from the submicron sized conductive particles have a high and uniform conductivity.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: September 5, 1995
    Assignee: Xerox Corporation
    Inventors: Michael F. Cunningham, Thomas E. Enright, Hadi K. Mahabadi, John G. Van Dusen
  • Patent number: 5447784
    Abstract: A transparent static dissipative adhesive tape is disclosed. The tape comprises a transparent polymer substrate having opposed first and second surfaces, a transparent static dissipative coating on the first surface of the substrate, and a transparent static dissipative adhesive coating on the second surface of the substrate. The adhesive coating comprises a transparent conductive layer on the second surface formed of conductive particles in a polymer matrix, and a transparent adhesive layer without any conductive particles over the conductive layer. The exposed surface of the adhesive layer exhibits conductivity substantially the same as the conductivity of the underlying conductive layer.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: September 5, 1995
    Assignee: Rexham Industries Corp.
    Inventors: Gregory D. Williams, Leonard Holley, Jeffrey D. Lovelace
  • Patent number: 5441809
    Abstract: High transparency, low-haze, static dissipative cover tapes for two-piece surface mount device packaging tapes are described comprising a metallized backing film, e.g. a polyester film one side of which is coated with a thin layer of aluminum, and a heat-sealable adhesive, e.g. an adhesive comprising a styrenic block elastomer, a tackifier, a plasticizing agent, an antiblock agent, and a conductive material such as nickel flakes. The cover tapes of this invention can be used with carrier tapes made from either polystyrene or polyvinyl chloride, and demonstrate a consistent peel strength of between 30 and 80 grams.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: August 15, 1995
    Assignee: Brady U.S.A., Inc.
    Inventor: Sohail Akhter
  • Patent number: 5425995
    Abstract: The invention provides for a process of using a static dissipative, polymeric composition to prevent electrostatic discharge. The static dissipative, polymeric composition is both humidity independent and water insoluble. The present invention also provides an article comprising a substrate to be protected from electrostatic discharge.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: June 20, 1995
    Inventor: Greg R. Unruh
  • Patent number: 5418026
    Abstract: Composite pressure sensitive label sheets will print in hot laser printers without curling if they comprise at least three layers: A. at least one base layer having a pressure sensitive adhesive on the bottom face, B. a printable surface layer on top of the base layer or layers, and C. a strippable protective backing on the pressure sensitive adhesive coated bottom face on the base layer or layers and if the thermal expansion or contraction characteristics of the printable layer B and the protective backing C are the same or substantially the same.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: May 23, 1995
    Assignee: Peter J. Dronzek, Jr.
    Inventors: Peter J. Dronzek, Jr., Roger H. Sedran, Brian K. Burke
  • Patent number: 5411778
    Abstract: The present invention relates to a roller for use in electrophotographic development comprising a rigid substrate and a polymeric covering comprising metal 1,3 bis perfluoroalkyl (1,3 dioxopropane) mixed in a polymer.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: May 2, 1995
    Assignees: International Business Machines Corp., Lexmark Corp.
    Inventors: Arthur F. Diaz, Thomas H. Baum