Patents Represented by Attorney, Agent or Law Firm Robert B. Martin
  • Spindle motor with stress alleviating groove provided in hub cylindrical protrusion portion
    Patent number: 5896242
    Abstract: A spindle motor assembly includes a hub, a motor, and a bearing cartridge having a plurality of bearing balls disposed between a sleeve and a shaft. The shaft includes a cylindrical hollow portion which is attached to a cylindrical protrusion portion of the hub to provide a stable attachment between the hub and shaft without increasing the height of the spindle motor assembly. Grooves are formed on the outer peripheral surface of the cylindrical protrusion portion to alleviate stress between the hub and shaft resulting from thermal expansion.
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: April 20, 1999
    Assignee: International Business Machines Corporation
    Inventors: David W. Albrecht, Hiroshi Matsuda, Keishi Takahashi
  • Process for manufacture of integrated circuit device
    Patent number: 5895263
    Abstract: The invention relates to a process for forming an integrated circuit device comprising (i) a substrate; (ii) metallic circuit lines positioned on the substrate and (iii) a dielectric material positioned on the circuit lines. The dielectric material comprises porous organic polysilica.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: April 20, 1999
    Assignee: International Business Machines Corporation
    Inventors: Kenneth Raymond Carter, Daniel Joseph Dawson, Richard Anthony DiPietro, Craig Jon Hawker, James Lupton Hedrick, Robert Dennis Miller, Do Yeung Yoon
  • Electrophoretic display
    Patent number: 5872552
    Abstract: The invention relates to an ambient light electrophoretic display comprising a plurality of cells containing a suspension of charged pigment particles in a light-transmissive fluid. Each cell comprises a light-transmissive front window, a nonobstructing collecting electrode and counter electrode disposed in the cell, and a panel having a reflective or absorbing surface.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: February 16, 1999
    Assignee: International Business Machines Corporation
    Inventors: Joseph Grover Gordon, II, Mark Whitney Hart, Andrew Marian Homola, Dennis Richard McKean, Lawrence Brian Schein, Barton Allen Smith, Sally Ann Swanson
  • Extended ribbon life for improved bar code printing
    Patent number: 5871287
    Abstract: Disclosed is an improved method, in an impact matrix printer, for extending print ribbon life when used in printing bar codes and for improving the quality of bar codes printed by the ribbon, the printer including a dot matrix print head having a plurality of print pins and print hammers. The printer includes a medium to receive printed indicia thereon, and a print ribbon intermediate the print head and the medium, and means for effecting relative movement between the print head, the medium and the print ribbon so as to position opposite the print head different portions of the medium from time to time when the printer is operational and printing and to position different portions of the print ribbon intermediate the print head and the medium at preselected times when the printer is operational and printing.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: February 16, 1999
    Assignee: International Business Machines Corporation
    Inventors: Robert Edward Boyanowski, Michael Robert Brechko, Ho Chong Lee, Jack Louis Zable
  • Ink composition
    Patent number: 5869564
    Abstract: The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier; a pigment; and a copolymer comprising a hydrophilic segment having an acidic function group, and a hydrophobic segment having a hydrolytically stable siloxyl substituent.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: February 9, 1999
    Assignee: International Business Machines Corporation
    Inventors: Bradley Leonard Beach, Arthur Fred Diaz, Seong-Jin Kim, Dennis Richard McKean, Anna Marie Pearson, Jing Xiao Sun, Ajay Kanubhai Suthar, Richard Barber Watkins
  • Process for use of photosensitive polysilanes as photoresist
    Patent number: 5866306
    Abstract: The present invention relates to the use of certain polyalkylphenyl silanes in photoresists to generate positive tone resist images. The polyalkylphenyl silanes have the formula: ##STR1## where R is C2-C12 alkyl and n is about 150 to 7000.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: February 2, 1999
    Assignee: International Business Machines Corporation
    Inventors: Robert Dennis Miller, Gregory Michael Wallraff, Mark Edwin Baier
  • Method and apparatus for detecting and measuring organic materials on components of a magnetic storage system
    Patent number: 5844151
    Abstract: A method and apparatus for detecting and measuring organic materials present on components used in magnetic storage systems, such as an actuator coil. The component is heated on a hot plate, and a concave lens with a low surface energy coating is placed over the component. The contaminants volatilize and condense on the glass lens. The condensate is collected in solvent. The solvent is evaporated and the size of the residue is measured. A determination can be made whether the component is suitable for used in a magnetic storage system.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: December 1, 1998
    Assignee: International Business Machines Corporation
    Inventors: Charles Allan Brown, Ronald Louis Herbold, Andrew Marian Homola, Heidi Lee Merkins, Herman Russell Wendt
  • Reflective lithographic mask
    Patent number: 5827622
    Abstract: The invention relates to a reflective phase-shifting lithographic mask having a reflective surface comprising a plurality of areas having different refractive indices.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: October 27, 1998
    Assignee: International Business Machines Corporation
    Inventors: Hans Juergen Coufal, Robert Keith Grygier
  • Process for making a foamed elastomeric polymer
    Patent number: 5804607
    Abstract: The present invention relates to a process for forming a foamed elastomeric polymer. The process involves forming a reverse emulsion of liquid droplets in a continuous liquid phase of polymer precursor and then polymerizing the precursor to entrap uniformly distributed droplets of the liquid in pores formed in the polymer bulk. The liquid in the pores is then removed under supercritical conditions.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: September 8, 1998
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey Curtis Hedrick, James Lupton Hedrick, Jons Gunnar Hilborn, Yun-Hsin Liao, Robert Dennis Miller, Da-Yuan Shih
  • Grip cap for computer control stick
    Patent number: 5798754
    Abstract: The present invention relates to a resilient hollow grip cap for removable mounting on the top of a computer control device i.e., a finger actuated pointing stick. The cap has a plurality of short fibers adhered to its outer surface and extending outwardly away from the surface of the cap.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: August 25, 1998
    Assignee: International Business Machines Corporation
    Inventors: Edwin Joseph Selker, Kazunori Seki, Michio Suzuki, Kenshin Yonemochi
  • Process for use of photoresist composition with deep ultraviolet radiation
    Patent number: 5786131
    Abstract: The present invention relates to a process for generating a resist image on a substrate utilizing a resist composition comprising (a) a radiation-sensitive acid generator, (b) a substituted androstane, and (c) a copolymer acrylate binder. The resist image is made using deep ultraviolet radiation.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: July 28, 1998
    Assignee: International Business Machines Corporation
    Inventors: Robert David Allen, Richard Anthony DiPietro, Gregory Michael Wallraff
  • Liquid crystalline display
    Patent number: 5783114
    Abstract: The present invention is a display comprising a light-modulating composition comprising liquid crystalline pyrimidines or pyridazines preferably admixed with other liquid crystalline materials disposed between a first and second electrode.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: July 21, 1998
    Assignee: International Business Machines Corporation
    Inventors: Daniel John Dyer, Robert James Twieg
  • Foamed polymer for use as dielectric material
    Patent number: 5776990
    Abstract: The present invention relates to an insulating foamed polymer having a pore size less than about 1000 .ANG. made from a copolymer comprising a matrix polymer and a thermally decomposable polymer by heating the copolymer above the decomposition temperature of the decomposable polymer.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: July 7, 1998
    Assignee: International Business Machines Corporation
    Inventors: James Lupton Hedrick, Donald Clifford Hofer, Jeffrey William Labadie, Robert Bruce Prime, Thomas Paul Russell
  • Integrated circuit device and process for its manufacture
    Patent number: 5773197
    Abstract: The invention relates to an integrated circuit device comprising (i) a substrate; (ii) metallic circuit lines positioned on the substrate and (iii) a dielectric material positioned on the circuit lines. The dielectric material comprises the reaction product of an organic polysilica and uncondensed precursor polymer preferably terminated with an alkoxysilyl alkyl group.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: June 30, 1998
    Assignee: International Business Machines Corporation
    Inventors: Kenneth Raymond Carter, James Lupton Hedrick, Robert Dennis Miller
  • Integrated circuit and process for its manufacture
    Patent number: 5767014
    Abstract: The invention relates to an integrated circuit device comprising (i) a substrate; (ii) metallic circuit lines positioned on the substrate and (iii) a dielectric material positioned on the circuit lines. The dielectric material comprises the reaction product of a hyperbranched polymer and organic polysilica.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: June 16, 1998
    Assignee: International Business Machines Corporation
    Inventors: Craig Jon Hawker, James Lupton Hedrick, Robert Dennis Miller
  • Enhanced page placement for multiple-up presentation
    Patent number: 5768488
    Abstract: A page placement process for advanced function print systems that is integrated in the datastream presentation architectures utilized for the storage, retrieval, and printing of documents over a wide range of applications and system environments. The process enables user defined placement of pages in an N-up environment in terms of sheet, sheet side, partition, offset and orientation.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: June 16, 1998
    Assignee: International Business Machines Corporation
    Inventors: David Earl Stone, Reinhard Heinrich Hohensee, James Warden Marlin
  • Light emitting device
    Patent number: 5767624
    Abstract: The invention relates to an organic electroluminescent device comprising a light emitting composition disposed between a first and second electrode. The composition comprises a charge transporting polymer and an organic salt comprising immobilized anions and cations nonuniformly distributed in the polymer matrix.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: June 16, 1998
    Assignee: International Business Machines Corporation
    Inventors: Joseph Grover Gordon, II, Sigfried Friedrich Karg, James Harvey Kaufman, Martin Kreyenschmidt, Robert Dennis Miller, John Campbell Scott
  • Electronic devices comprising dielectric foamed polymers
    Patent number: 5756021
    Abstract: The present invention relates to an electronic device for distributing electrical signals between electronic elements comprising a dielectric foamed thermoset polymer having a plurality of electrical circuits.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: May 26, 1998
    Assignee: International Business Machines Corporation
    Inventors: James Lupton Hedrick, Da-Yuan Shih
  • Electrophoretic display
    Patent number: 5745094
    Abstract: The invention relates to an ambient light electrophoretic display comprising a plurality of cells containing a suspension of charged pigment particles in a light-transmissive fluid. Each cell comprises a light-transmissive front window, a nonobstructing collecting electrode and counter electrode disposed in the cell, and a panel having a reflective or absorbing surface.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: April 28, 1998
    Assignee: International Business Machines Corporation
    Inventors: Joseph Grover Gordon, II, Mark Whitney Hart, Andrew Marian Homola, Dennis Richard McKean, Lawrence Brian Schein, Barton Allen Smith, Sally Ann Swanson
  • Method and device for holographic storage
    Patent number: 5739929
    Abstract: A two-photon process for writing to a holographic recording medium comprising a photorefractive material doped with an excitation dopant selected from rare earth ions and an ionization dopant selected from transition metal ions or rare earth ions.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: April 14, 1998
    Assignee: International Business Machines Corporation
    Inventor: Roger Morton Macfarlane