Patents Examined by James B. Monroe
  • Patent number: 4910057
    Abstract: The present invention provides a highly elongated member of substantially uniform cross-sectional configuration which is capable of improved service as a stiffening support in an optical fiber cable. Such elongated member is the product of melt extrusion through an appropriate orifice of a thermotropic liquid crystalline polymer (as described). The resulting elongated member has been found to offer significant advantages when compared to stiffening supports heretofore proposed for use in optical fiber cables.
    Type: Grant
    Filed: April 2, 1982
    Date of Patent: March 20, 1990
    Assignee: Hoechst Celanese Corporation
    Inventors: Yoshiaki Ide, Gabor Kiss, Hyun N. Yoon
  • Patent number: 4894284
    Abstract: A cable insulated with a cross-linked polyethylene layer is described, wherein the cross-linked polyethylene is prepared by cross-linking with 2,5-dimethyl-2-5-di(tert-butylperoxy)hexane or 2,5-dimethyl-2,5-di(tert-butylperoxy)hexyne-3 as a cross-linking agent. Even if voltage is applied at high temperatures, the breakdown voltage of the cable can be maintained at a high level.
    Type: Grant
    Filed: November 8, 1983
    Date of Patent: January 16, 1990
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Shosuke Yamanouchi, Yoshiyuki Inoue, Masaaki Kondo
  • Patent number: 4891266
    Abstract: A dry, three-dimensional, sculptable solid comprising a quantity of granular material comprising grains individually coated with paint and a water resistant binder binding the grains of the granular material together into a solid, dry, carvable block having a hardness between about 0.25 and about 4.0 on the Moh's scale.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: January 2, 1990
    Inventor: Barry Keith
  • Patent number: 4886704
    Abstract: This invention relates to a strippable coating film for use as a masking material serving to create attractively finished boundaries, for example, in multi-color painting of automobiles and the like, as well as a coating method using such a coating film.A coating film containing 1 to 20 parts by weight of carbon black per 100 parts by weight of the resin component present therein is suitable. Especially preferred is a coating film formed of an acrylic emulsion paint and having an adhesion to the substrate of 20 to 1000 g/inch as expressed in terms of 180.degree. peeling strength. It is disclosed that, by equipping a YAG laser with a Q-switching oscillator unit and operating the Q-switch at a pulse repetition frequency of 0.5 to 30 kHz, the coating film can be cleanly cut to achieve an attractive finish in multi-color painting.
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: December 12, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Keiichi Kamada, Motoyuki Torikai, Yasuo Ohkita
  • Patent number: 4885211
    Abstract: An electroluminescent device is disclosed comprised of, in sequence, an anode, an organic hole transporting zone, an organic electron transporting zone, and a cathode. The cathode is comprised of a layer of a plurality of metals other than alkali metals, at least one of said metals having a work function of less than 4 eV.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: December 5, 1989
    Assignee: Eastman Kodak Company
    Inventors: Ching W. Tang, Steven A. VanSlyke
  • Patent number: 4885203
    Abstract: Brick and tile products are made from a homogeneous mixture of low grade in expensive ceramic microspheres and clay or other binding agent. The microspheres have an axial oxide content under 6 percent by weight and a melting point in excess of the temperature at which brick and tile are fired. The microspheres have random sizes ranging between one third and 200 microns. Brick utilizing the invention is significantly lower in weight and permeability, require much less energy to sinter and less time for firing. Improved thermal and acoustic insulation value is obtained with the invention, and vulnerability to thermal shock is diminished.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: December 5, 1989
    Assignee: Applied Ultralight Technologies, Inc.
    Inventor: George H. Wakat
  • Patent number: 4883710
    Abstract: A magneto-optical recording medium is disclosed, which comprises a substrate, and a magnetic layer supported on the substrate, the magnetic layer comprising (1) a first magnetic layer comprising a magnetic oxide with perpendicular magnetic characteristics, having a saturation magnetization Ms of 100 Gauss or less and a coercive force Hc.sub.1 of 1 KOe or less, and (2) a second magnetic layer comprising a magnetic oxide having a thermal conductivity.times.of less than 0.3 cal/cm.sec..degree.C. and a light absorption coefficient .alpha. of 5.times.10.sup.3 cm.sup.-1 or more. This magneto-optical recording medium may further comprises an auxiliary production layer comprising a magnetic material, which is overlaid adjacent to the first magnetic layer.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: November 28, 1989
    Assignee: Ricoh Company, Ltd.
    Inventor: Hajime Machida
  • Patent number: 4882226
    Abstract: A carrier material usable as such in chromatographic separations or as a starting material which, upon linkage to it of compounds containing ionic groups, ligands or bio-active materials can be used as ion exchanger, as a clinical selective adsorbent, as a medium in affinity chromatography or in enzymatic reactions and consists of a core material obtained by addition polymerization of monomers of which at least 50 mole % consists of (meth)acrylic acid or an ester forming equivalent thereof and a hydrophilic coating material, which is covalently bonded to the core by complete or partial conversion of the carboxyl function with a compound containing at least three carbon atoms and an epoxy group, the epoxy groups that are still present having been converted by etherification and/or hydrolysis to form an ester of a compound containing a hydroxyl group or an oligomer thereof having a molecular weight not higher than 1000, as well as a process for preparing the same.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: November 21, 1989
    Assignee: Akzo N.V.
    Inventors: Jan A. J. Schutyser, Antonius J. W. Buser
  • Patent number: 4880694
    Abstract: Disclosed is a magneto-optical recording material whose composition formula is indicated by (Co.sub.1-a M.sub.a).sub.100-y R.sub.y where M denotes at least one element selected from the group consisting of elements of the platinum group and Fe, Ni, Nb, Cu, Ag, Al, B, Si and Ge; R denotes either at least two elements selected from the group consisting of Tb, Sm, Gd, Dy, Ho and Y or a single element selected from the group consisting of Tb, Gd, Dy and Ho; the value a satisfies 0<a.ltoreq.0.5, while the value y satisfies 14.ltoreq.y.ltoreq.36 in terms of atomic percent; the material being substantially amorphous. A perpendicularly magnetized amorphous film made of this material is excellent in thermal stability, corrosion resistance etc., and affords a greater read output-to-noise ratio (C/N).
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: November 14, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Shinji Takayama, Toshio Niihara, Katsuhiro Kaneko, Yutaka Sugita
  • Patent number: 4880703
    Abstract: Disclosed in an electroconductive titanium oxide very low in powder resistivity and imparting superior electroconductivity when incorporated into a resin which comprises an acicular titanium oxide of at most 3% by weight in impurity content which has on the surface an electroconductive layer comprising tin oxide and antimony oxide.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: November 14, 1989
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Masashi Sakamoto, Haruo Okuda, Hideo Takahashi, Eiji Yamada
  • Patent number: 4876144
    Abstract: It is disclosed that a Heusler alloy thin film having a structure of a single crystal is prepared by forming a Heusler alloy thin film having a magneto-optical effect and an MgAgAs type crystalline structure on a single crystal substrate, whereby magnetization is easily effected in a low applied magnetic field. This single crystal thin film is suitable as a material of a head for writing magnetically and reading out optically.
    Type: Grant
    Filed: October 22, 1987
    Date of Patent: October 24, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Kenzo Susa, Kazumasa Takagi, Toshio Kobayashi, Takanobu Takayama, Norio Ohta
  • Patent number: 4876135
    Abstract: A floor mat comprising a jacket member having a throat opening in a free edge thereof for receiving an insert sheet of absorbent material. The top sheet of the jacket has openings therein for the passage of foreign matter. The insert sheet is disposed under the top sheet and retains foreign matter disposed thereon through the openings in the top sheet. The back surface of the insert is coated with a water resistant coating. After the insert sheet is soiled it can be removed and cleaned or replaced by a new sheet with the soiled sheet discarded.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: October 24, 1989
    Inventor: Blair McIntosh
  • Patent number: 4876136
    Abstract: Wax-base or emollient-base cosmetic compositions may be provided as samples on carrying sheets by providing the carrying sheet with a window sheet having a hole therein to expose said cosmetic composition, and a cover sheet over said window sheet to protect said exposed composition from incidental contact.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: October 24, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert W. H. Chang, Keith E. Relyea
  • Patent number: 4875987
    Abstract: A grooved magnetic substrate including an alumina film layer having a Knopp hardness of 600 kg/mm.sup.2 to 1200 kg/mm.sup.2 charged in at least one groove formed in a surface of a magnetic substrate. The magnetic substrate may be Mn-Zn or Ni--Zn base ferrite. The alumina film layer is formed by sputtering.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: October 24, 1989
    Assignee: Sumitomo Special Metals, Co., Ltd.
    Inventors: Toshiaki Wada, Yoshiaki Katsuyama, Junichi Nakaoka
  • Patent number: 4871616
    Abstract: A surface-treated poly methyl silsesquioxane powder characterized by surface-treatment with an agent comprising a compound which has at least two radicals attached to a metal atom or a silcon atom, said radical is selected from the group consisting of a hydroxyl radical, a hydrolyzable radical and a monovalent hydrocarbon radical substituted by a polar group.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: October 3, 1989
    Assignee: Toshiba Silicone Co., Ltd.
    Inventors: Hiroshi Kimura, Akira Takagi
  • Patent number: 4871606
    Abstract: A magnetic recording medium having high running stability and good magnetic characteristics without causing an abrasion problem, which comprises a base film, a magnetic layer provided on one surface (i.e. the major surface) of the base film and a back coat layer provided on the other surface (i.e. the back surface) of the base film, the back coat layer comprising a binder and non-magnetic particles dispersed therein, characterized in that the non-magnetic particles comprise at least one soft inorganic pigment having a hardness of less than 5 in Mohs' scale of hardness and at least one hard inorganic pigment of not less than 5 in Mohs' scale of hardness and of not more than 0.2 .mu.m in average particle size in a weight ratio of the soft pigment to the hard pigment of 99:1 to 50:50.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: October 3, 1989
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Takeshi Matsuura, Akira Morioka, Yoshiyuki Takahira
  • Patent number: 4869960
    Abstract: Ceramic particulate useful as a proppant in hydraulic fracturing and in gravel packing operations is provided which comprises a ceramic (sometimes vitreous) core surrounded by an epoxy resin coating. Novolac epoxy resin compounds without any substantial acid soluble filler are used to coat ceramic particulates similar to those disclosed in U.S. Pat. Nos. 4,680,230 and 4,632,876. The result is a product which combines the excellent solvent resistance of the ceramics with the acid resistance of the resin. The resin coating gives the added benefits of lower specific gravity and improved crush resistance.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: September 26, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James L. Gibb, James A. Laird, Leslie G. Berntson
  • Patent number: 4865916
    Abstract: A thin film type magnetic recording medium having a durability close to that of the coating type magneting recording medium is provided by a metal oxide protective layer which is formed by a physical vapor deposition.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: September 12, 1989
    Assignee: Teijin Limited
    Inventors: Michio Yamaura, Toshiaki Yatabe, Hiroshi Matsuzawa, Takashi Tomie
  • Patent number: 4863800
    Abstract: A pigment material, the surfaces of which are treated with a saturated fatty acid triglyceride having an iodine value of not more than 5. The treated pigment material, which is used in cosmetics, has strong water repellency, feels smooth, and adheres well to the skin.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: September 5, 1989
    Assignee: Miyoshi Kasei Co., Ltd.
    Inventors: Ryota Miyoshi, Isao Imai
  • Patent number: 4861643
    Abstract: An aerospace structure and method for its construction composed of two elements having mutually opposed mating surfaces, at least one of which is irregular. The mating surfaces of the elements are fastened and compressed against a noncompressible cast-in-place void filler having complimentary shape to the two mating surfaces. The void filler is prepared by admixing a polymerizing matrix selected from polyesters, epoxides, polyamides, polyimides, polycarbonates, polyvinyl alcohols and organosilicone polymers and a space filling material selected from phenolic microspheres, carbon microspheres, metal coated microspheres, chopped fiberglass, alumina, fumed silica and mixtures thereof.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: August 29, 1989
    Assignee: The Boeing Company
    Inventor: Cynthia M. Scollard