Patents by Inventor Nobuo Yokoyama

Nobuo Yokoyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6484942
    Abstract: Reading sections (21a, 21b) wherein disks (10a, 10b) bearing barcodes are installed, are provided, and code sensors (23a, 23b) for reading out these barcodes are provided in the reading sections (21a, 21b). When a player rotates a disk (10a, 10b) installed on a turntable (22a, 22b), the barcode is read out by the code sensors (23a, 23b), and parameters are set respectively on the basis of this barcode. Thereafter, if the player rotates the disk (10a, 10b) while simultaneously operating the buttons (25a-27a, 25b-27b), this combination is input as a command, and the game is developed accordingly. Thereby, it is possible to provide an information storage medium, information reproduction device, game machine, and information reproduction method, whereby code, such as barcode, or the like, can be used effectively.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: November 26, 2002
    Assignee: Sega Enterprises Ltd.
    Inventors: Nobuo Yokoyama, Eiji Takuma, Takashi Matsuda
  • Patent number: 5015404
    Abstract: An oil composition contains 100 parts by weight of a base oil selected from the group consisting of mineral base oil, synthetic base oil and mixtures thereof, and 0.1 to 20 parts by weight of a hydrogenated oil obtained by hydrogenating an oil selected from the group consisting of coal type tar, oil produced by fractionating coal type tar, a hydrocarbon obtained by thermally cracking petroleum and having a boiling point of not lower than 200.degree. C., a hydrocarbon obtained by catalytically cracking petroleum and having a boiling point of not lower than 200.degree. C., a hydrocarbon obtained by catalytically reforming petroleum and having a boiling point of not lower than 200.degree. C., and mixtures thereof, whereby the hydrogenated oil has the hydrogen-donating properties of not lower than three times the hydrogen-donating properties of the base oil at temperatures of not lower than 350.degree. C.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: May 14, 1991
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Junichi Kubo, Nobuo Yokoyama, Hirotugu Kinoshita
  • Patent number: 4803013
    Abstract: Novel halogenated naphthalene derivatives of the formula ##STR1## where X is F or Br, and a process for making the same are disclosed. Insulating oils are also disclosed which essentially comprise such a fluorine-containing compound and commonly used hydrocarbon insulating oils. The additive is highly conductive to improved dielectric constant, dielectric loss, hydrogen gas absorptivity, fluidity and viscosity characteristics.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: February 7, 1989
    Assignee: Nippon Oil Co., Ltd.
    Inventor: Nobuo Yokoyama
  • Patent number: 4770802
    Abstract: A lubricating oil composition which comprises (I) a base oil selected from mineral oils having an aromatic content of not higher than 30 wt %, synthetic oils which are free of aromatic rings in the structural units, and mixtures thereof, and (II) 0.01 to 5.0 wt %, based on the total composition, of N-p-branched alkylphenyl-alphanaphthylamine which has an alkyl moiety having 12 or 15 carbon atoms and which is derived from a propylene oligomer.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: September 13, 1988
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Noboru Ishida, Nobuo Yokoyama
  • Patent number: 4598019
    Abstract: The present invention is directed to a method for surface treatment characterized by making use of a surface treating agent, for a powdery and granular material stored in the open air, containing 0.5 to 50% by weight of a solid content as an essential component and a residue which is water, said solid content comprising (I) 100 parts by weight of a petroleum wax component selected from the group consisting of slack waxes containing 1% by weight or more of an oil content, slack microcrystalline waxes including 1% by weight or more of an oil content, paraffin waxes, microcrystalline waxes and their mixtures and (II) 5 to 500 parts by weight of a polymer component having adhesive properties and the lowest film-forming temperature of 40.degree. C. or less.
    Type: Grant
    Filed: December 5, 1984
    Date of Patent: July 1, 1986
    Assignee: Nippon Oil Company, Ltd.
    Inventor: Nobuo Yokoyama
  • Patent number: 4468254
    Abstract: A wax emulsion is disclosed which upon application to a material forms a film capable of keeping the material water-proof or otherwise protective against ambient influences. The quality of the wax emulsion is improved by the combination of a hydrocarbon wax with a liquid polybutadiene a polybutene or a polyisobutylene.
    Type: Grant
    Filed: April 14, 1983
    Date of Patent: August 28, 1984
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Nobuo Yokoyama, Yoshihiko Araki
  • Patent number: 4449071
    Abstract: A fluorescent lamp device including an outer tube containing a fluorescent lamp therein, a connection tube connected to one end of the outer tube, a cap containing a glow starter and a condenser connected to the other end of the outer tube, and a base member connected to the connection tube. The base member contains a ballast member including a thermistor and a thermal adjustment member having a plurality of radiation fins, which are connected electrically and thermally through a conductive plate.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: May 15, 1984
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventor: Nobuo Yokoyama
  • Patent number: 4442140
    Abstract: An aqueous composition for the protection of paint surfaces comprises an aqueous emulsion containing as essential components (a) an oxygen-containing wax, (b) an emulsifying agent, (c) a fine powder of an inorganic material having a silicon content of not less than 23%, and (d) a fine powder of an inorganic or organic material substantially free of silicon.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: April 10, 1984
    Assignee: Nippon Oil Co. Ltd.
    Inventors: Nobuaki Kawabata, Nobuo Yokoyama, Yoshihiko Araki
  • Patent number: 4366416
    Abstract: A fluorescent lamp device formed of an outer tube containing a fluorescent lamp therein, a connection tube connected to one end of the outer tube, a cap containing a glow starter and a condenser therein connected to the other end of the outer tube, and a base member connected to the connection tube. The base member contains a ballast member mainly formed of a thermistor and a thermal adjustment member having an integrally formed contacting member for making electrical connection with a base pin of the fluorescent lamp. The thermal adjustment member and the thermistor are in direct electrical and mechanical engagement such that the thermal adjustment member conducts heat from the thermistor to the thermal adjustment member.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: December 28, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventor: Nobuo Yokoyama
  • Patent number: 4339276
    Abstract: A wax emulsion is provided which comprises as essential ingredients (A) 100 parts by weight of a petroleum fraction wax having a melting point ranging within 40.degree. to 90.degree. C.; and (B) 3 to 20 parts by weight of an oxygen containing wax; said oxygen-containing wax being prepared by mixing 10 to 80 parts by weight of a petroleum fraction wax (I) having a melting point ranging within 50.degree. to 85.degree. C. with 90 to 20 parts by weight of a polyolefin wax (II) having a melting point ranging within 36.degree. to 120.degree. C., a number average molecular weight of from 310 to 1,000 and 5 to 50 double bonds per 1,000 carbon atoms to obtain a mixture, and then reacting 100 parts by weight of said mixture with 3 to 25 parts by weight of an unsaturated polycarboxylic acid or an anhydride thereof under a condition for forming free radicals.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: July 13, 1982
    Assignee: Nippon Oil Company, Limited
    Inventors: Nobuo Yokoyama, Nobuaki Kawabata
  • Patent number: 4218252
    Abstract: An ink composition for carbon paper comprising a base oil, wax, carbon black, a dyestuff and filler, characterized by the fact that the wax contains a new wax prepared by reacting a specific polyolefin wax with an unsaturated polycarboxylic acid or the like to produce a reaction mixture, removing the unreacted acid or the like therefrom to obtain a modified wax, and then reacting the modified wax with a compound of a metal of Group II of the Periodic Table to convert the acidic groups of the modified wax to a salt of the Group II metal thereby obtaining the new wax.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: August 19, 1980
    Assignee: Nippon Oil Company, Ltd.
    Inventor: Nobuo Yokoyama
  • Patent number: 4218263
    Abstract: A process for preparing an oxygen-containing wax obtained by reacting a mixture of saturated and unsaturated hydrocarbon waxes with an unsaturated polycarboxylic acid thereby to prepare the oxygen-containing wax. In one embodiment, this invention relates to the oxygen-containing waxes so prepared.
    Type: Grant
    Filed: November 17, 1978
    Date of Patent: August 19, 1980
    Assignee: Nippon Oil Company, Ltd.
    Inventors: Nobuaki Kawabata, Nobuo Yokoyama
  • Patent number: 4071581
    Abstract: A process for the preparation of a modified polyolefin wax having improved hardness and gloss, which comprises reacting a waxy polyolefin with maleic anhydride to produce a maleinised polyolefin wax, reacting at 100.degree. - 180.degree. C the thus-produced maleinised wax with water in an amount of 2 - 80 parts by weight per 100 parts by weight of the maleic anhydride reacted with the waxy polyolefin and, if desired, distilling off from the reaction system an excess of the water remaining therein after the end of the hydrolytic reaction, at a temperature of 100.degree. - 180.degree. C under atmospheric or a reduced pressure.
    Type: Grant
    Filed: March 2, 1977
    Date of Patent: January 31, 1978
    Assignee: Nippon Oil Co., Ltd.
    Inventor: Nobuo Yokoyama