Patents Examined by Holly C Rickman
  • Patent number: 6365287
    Abstract: It is an object of the present invention to provide a magnetic recording medium which has a high level of magnetic anisotropy energy, retains stably the state of recording magnetization within the operating temperature range and is suitable for high-density recording with a low noise level, and a magnetic storage device for the magnetic recording medium. For attaining the above object, the magnetic recording film of the magnetic recording medium is characterized in that its magnetic anisotropy energy constant Ku at an absolute temperature of 300 K is greater than 3.6×106 erg/cc and the average particle diameter is larger than 5 nm and smaller than 12 nm.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: April 2, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Inaba, Tomoo Yamamoto, Teruaki Takeuchi, Masukazu Igarashi, Yoshio Takahashi
  • Patent number: 6361581
    Abstract: A protective coat formed by thermal spraying, and having an outstanding durability against corrosion by a molten light alloy. A thermal spraying composite material used to form such a coat contains from about 30 to about 70% by weight of molybdenum boride, from about 20 to about 40% by weight of nickel or cobalt, from about 5 to about 20% by weight of chromium, and from about 5 to about 10% by weight of at least one metal boride selected from the borides of Cr, W, Zr, Ni and Nb.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: March 26, 2002
    Assignees: Chubu Sukegawa Enterprise Co., LTD, Showa Denko K.K.
    Inventors: Tsujihiko Yasuda, Akiyoshi Banno, Tamio Ito, Koji Kiyoshi, Kunimoto Ishibayashi
  • Patent number: 6358636
    Abstract: Protective overlayers for magnetic recording media are described. The overlayers, composed of a transition metal-silicon or transition metal-germanium interlayer and a carbon overcoat, provide good wear resistance and corrosion resistance at thicknesses of less than 100 Å.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: March 19, 2002
    Assignee: HMT Technology Corporation
    Inventors: Ming M. Yang, Zhangmin Wang, James L. Chao, Michael A. Russak
  • Patent number: 6355304
    Abstract: A product resulting from and a method of applying a metal or metallic plating including the steps of providing a substrate, including polymeric and elastomeric substrates, coating the substrate with a relatively thin layer of epoxy-solvent combination, the epoxy being a resin-rich two-part epoxy, metal plating the coated substrate, fully curing the epoxy.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: March 12, 2002
    Assignee: Summit Coating Technologies, LLC.
    Inventor: Hillarion Braun
  • Patent number: 6348276
    Abstract: Magnetic recording media with high coercivity and low noise, suitable for high density longitudinal recording, are formed with a surface oxidized sub-seedlayer between a non-magnetic substrate and seedlayer. Embodiments include depositing a NiAl sub-seedlayer on a glass or glass-ceramic substrate, oxidizing the surface of the NiAl sub-seedlayer, and then sequentially depositing a NiAl seedlayer, Cr or Cr alloy underlayer, e.g., CrMo, an optional intermediate CoCrTa alloy layer, a magnetic layer, e.g., a Co-alloy magnetic layer, and a protective overcoat, e.g., a carbon-containing protective overcoat.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: February 19, 2002
    Assignee: Seagate Technology LLC
    Inventors: Qixu Chen, Zhong Wu, Samuel Dacke Harkness, IV, Charles Leu, Rajiv Yadav Ranjan
  • Patent number: 6348236
    Abstract: A process for the manufacture of a water blocking tape for use in cable manufacture, which process comprises the steps of: (i) forming a coating of an aqueous solution of a water soluble polymer containing anionic groups and a multivalent ionic crosslinking agent on at least one surface of a substrate material selected from the group consisting of a metal foil, a plastic film, a plastic sheet, a multilayer film, and a laminate of at least two thereof; and (ii) drying and/or curing the coating in order to form a partially crosslinked water swellable polymer coating on the at least one surface of the substrate material. Water blocking tapes are also provided which comprise a substrate material having a coating on at least one surface thereof of a water soluble polymer containing anionic groups which is partially crosslinked with a multivalent ionic crosslinking agent. The preferred water soluble polymer containing anionic groups is an acrylic or methacrylic acid (co)polymer.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: February 19, 2002
    Assignee: Neptco, Inc.
    Inventors: Stuart Paterson Fairgrieve, Jennifer Clare Watts, Joel David Gruhn, Phillip Douglas Shows
  • Patent number: 6346339
    Abstract: Magnetic recording media exhibiting enhanced SMNR are formed with an NiAlOx sub-seedlayer for microstructural control of the underlayer to enable deposition and growth of a magnetic layer exhibiting a (10{overscore (1)}0)-predominant crystallographic orientation and small, uniform grain size. Embodiments include completely reactive sputter depositing a NiAlOx sub-seedlayer on a glass-ceramic substrate and sequentially depositing thereon a NiAl seedlayer, a Cr or Cr-alloy underlayer, e.g., CrMo, a Co—Cr magnetic layer and a protective overcoat, e.g., carbon. The resulting magnetic recording media exhibit a high SMNR, high OW, narrow PW50, improved jitter and improved Hr.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: February 12, 2002
    Assignee: Seagate Technology LLC
    Inventors: Samuel Dacke Harkness, IV, Qixu (David) Chen, Zhong (Stella) Wu, Rajiv Yadav Ranjan
  • Patent number: 6346285
    Abstract: An article, such as a bag, pouch, or casing, is made from a multilayer film which has: (a) a first layer, which is an outer film layer, comprising a polyamide having a melting point of from about 250° F. to 400° F., the first layer having a thickness of less than about 18 percent, based on a total thickness of the multilayer film; (b) a second layer comprising at least one member selected from the group consisting of polyamide 6, polyamide 9, polyamide 10, polyamide 11, polyamide 12, polyamide 66, polyamide 610, polyamide 612, polyamide 6I, polyamide 6T, polyamide 69, and copolymers thereof, the second layer having a thickness of from about 3 to 30 percent of the total thickness of the multilayer film; and (c) a third layer which serves as an O2-barrier layer and comprises at least one member selected from the group consisting of ethylene/vinyl alcohol copolymer, and polyvinylidene chloride. The first layer of the film is sealed to itself.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: February 12, 2002
    Assignee: Cryovac, Inc.
    Inventor: Ram K. Ramesh
  • Patent number: 6331356
    Abstract: Electronic devices having patterned electrically conductive polymers providing electrical connection thereto and methods of fabrication thereof are described. Liquid crystal display cells are described having at least one of the electrodes providing a bias across the liquid crystal material formed from a patterned electrically conductive polymer. Thin film transistors having patterned electrically conductive polymers as source drain and gate electrodes are described. Light emitting diodes having anode and coated regions formed from patterned electrically conductive polymers are described. Methods of patterning using a resist mask; patterning using a patterned metal layer; patterning the metal layer using a resist; and patterning the electrically conductive polymer directly to form electrodes and anode and cathode regions are described.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: December 18, 2001
    Assignee: International Business Machines Corporation
    Inventors: Marie Angelopoulos, Christos Dimitrios Dimitrakopoulos, Bruce Kenneth Furman, Teresita Ordonez Graham, Shui-Chih Alan Lien
  • Patent number: 6331364
    Abstract: A patterned magnetic recording disk, i.e., a disk with discrete magnetically recordable regions that can function as discrete magnetic bits, is formed by ion irradiating a continuous magnetic film of a chemically-ordered alloy having a tetragonal crystalline structure through a patterned non-contact mask. The ions cause disordering in the film and produce regions in the film that have no magnetocrystalline anisotropy. The regions of the film not impacted by the ions retain their chemical ordering and magnetocrystalline anisotropy and thus serve as the discrete magnetic regions that can be recorded as individual magnetic bits. The chemically-ordered alloy is preferably Co (or Fe) and Pt (or Pd) with the c-axis of the tetragonal crystalline film oriented at an angle less than 45 degrees relative to the plane of the film, so that after patterning the discrete magnetic regions can be recorded by horizontal magnetic recording.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: December 18, 2001
    Assignees: International Business Machines Corporation, University of New Orleans Foundations
    Inventors: John Edward Eric Baglin, Andrew John Kellock, Bruce David Terris, Dieter Klaus Weller, Liesl Folks
  • Patent number: 6326081
    Abstract: An improved masking film provides an adequate level of protection to relatively smooth surfaces by providing an adjustable and controlled level of adhesion between the masking film and the surface to be protected without the use of corona treatment or an adhesive under a variety of production and application conditions. The use of various copolymers, comonomers, and blends and percentages thereof, allows for control of the adhesion level produced between the improved masking film and the substrate surface to be protected. Using the improved masking film of the present invention, the masking film can be customized for a set of production conditions and desire application and will remain removably adhered to the substrate following a heat-loading process such as thermoforming, drape-forming or heat-bending.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: December 4, 2001
    Assignee: Tredegar Film Products Corporation
    Inventors: Farid F. Ghiam, James Peter DiPoto
  • Patent number: 6325884
    Abstract: A laminated panel having an abrasion resistant surface is provided. The laminated panel includes a web being impregnated with a thermo-set resin, a bottom coat and an abrasion resistant top coat; a substrate; and thermo-fusing a bottom sheet to a second surface of the substrate opposite the first surface. The web is thermo-fused to one surface of the substrate, and the bottom sheet is simultaneously thermo-fused to the opposite surface of the substrate. A process for making an abrasion resistant laminated panel is also provided. The process includes the steps of partially impregnating a paper sheet or web with a thermosetting resin, drying it, coating the top side of the partially impregnated paper sheet or web with an abrasion resistant coat, simultaneously coating the bottom side of the paper sheet or web with a thermosetting resin composition, thermo-fusing the coated paper sheet or web to a first surface of a substrate and a bottom sheet to produce the laminated panel.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: December 4, 2001
    Assignee: Panolam Industries
    Inventor: Fouad Torkum Karam
  • Patent number: 6322904
    Abstract: A copper foil having improved resistance to abrasion damage during the manufacture of printed circuit boards has a uniform deposit of benzotriazole (BTA) or BTA derivative, optionally a mixture thereof, of at least about 5 mg/m2.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: November 27, 2001
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Makoto Dobashi, Hiroaki Kurihara, Toshiko Yokota, Hiroshi Hata, Naotomi Takahashi, Tatsuya Sudo
  • Patent number: 6318738
    Abstract: An ice skate blade is provided which has improved fracture toughness, strength, corrosion resistance, and wear resistance, while at the same time being lighter weight than other materials of manufacture.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: November 20, 2001
    Assignee: Dynamet Technology
    Inventors: Stanley Abkowitz, Susan M. Abkowitz, Harold L. Heussi, Paul F. Weihrauch
  • Patent number: 6312786
    Abstract: The invention concerns a multiple-layer composite sheet and a method of manufacturing such a sheet. The composite sheet comprises a supporting sheet bonded to a “hetero sheet”. The hetero sheet consists of a heterogeneous blend of an elastic thermoplastic fundamental substance that cures semicrystalline or amorphous subsequent to processing and particles of added material distributed therein. The particles can be mixed and extruded along with the fundamental substance although they are heterogeneously bound therein. In the hetero sheet the particles of added material heterogeneously distributed therein are detached, by stretching for example, from the surrounding fundamental substance (2) and the material of the hetero sheet stands up at the many areas of detachment to create a fleecy surface. At least one hetero sheet (20) is enclosed in at least one supporting sheet (10 & 30).
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: November 6, 2001
    Assignee: Nordenia Technologies GmbH
    Inventor: Georg Schwinn
  • Patent number: 6312809
    Abstract: A substrate having a dendrimer monolayer film thereon is provided. The film can comprise either dendrimers, or dendrons (dendrimer branches). In each case, the monolayer films are covalently bonded to the desired surface. The resulting structure can be employed in a variety of applications including chemical sensors.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: November 6, 2001
    Assignee: Sandia Corporation
    Inventors: Richard M. Crooks, Antonio J. Ricco, Mona Wells
  • Patent number: 6303205
    Abstract: A magnetic disk includes a substrate, a magnetic layer, and a protective layer. At least one region of a surface of the magnetic disk has protrusions. A height of each of the protrusions is not less than 5 nm and not greater than 40 nm, and is within ±30% of an average height of the protrusions. A density of the protrusions is not less than 200/mm2 and is not greater than 250,000/mm2. A width of a surface of each of the protrusions in a radial direction of the magnetic disk is not less than 0.1 &mgr;m and is not greater than 10 &mgr;m. The protrusions are discrete protrusions aligned in a spiral direction of the magnetic disk at a predetermined spacing in the radial direction of the magnetic disk. The at least one region of the surface of the magnetic disk includes flat areas between the protrusions.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: October 16, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Hideaki Tanaka, Kenichi Gomi, Yoshihiko Miyake, Sigeru Sano, Youichi Inomata, Hiroshi Yashiki, Yoshiki Kato, Masaki Ohura
  • Patent number: 6289196
    Abstract: A donor member useful in ionographic or electrophotographic apparatuses and preferably useful in hybrid scavengeless development units, having a substrate and an oxidized transport coating including charge transport molecules, polymer binder, and an oxidized oligo arylamine salt comprising a cation of an oligo arylamine molecule and a counter anion.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: September 11, 2001
    Assignee: Xerox Corporation
    Inventors: Bing R. Hsieh, Yuan Yu, William H. Wayman, Donald S. Stanton, Allen J. Thompson, Michelle L. Schlafer, Ann M. Kazakos, Heiko Rommelmann, Alan R. Kuntz, Steven C. Hart
  • Patent number: 6280844
    Abstract: A surface of a substrate is vacuum coated with a material by sequentially implanting and depositing ions from a single ion source. First ions of the coating material are initially implanted into the surface of the substrate to form an implanted substrate layer. Next, second ions of the material are deposited on the implanted substrate layer to form a seed layer. Third ions of the material are then implanted into the seed layer to form an intermixed layer. Fourth ions of the material are deposited over the intermixed layer to form the coating over the substrate.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: August 28, 2001
    Assignee: University of Maryland, Baltimore County
    Inventors: Oleg Vesnovsky, Timmie Topoleski, Victor Pushnykh
  • Patent number: 6280856
    Abstract: A deformable sheet material at least partly comprising a sheet metal or metal foil which is corrugated, e.g. by rolling, in continuous waveform in two directions (A, B) substantially orthogonal to each other. The sheet material can comprise aluminum foil with a thickness between 0.005-0.4 mm designed as a ribbon or a strip which prior to the rolling is folded in the longitudinal direction where an intermediate layer, e.g. of aluminum, can be placed between the two material layers.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: August 28, 2001
    Assignee: V. Kann Rasmussen Industri A/S
    Inventors: Susanne Bjergegaard Andersen, Per Jacobsen