Patents by Inventor Hitoshi Masuda

Hitoshi Masuda 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: 5335274
    Abstract: An improved extendible telephone having a main casing incorporating a receiver and an auxiliary casing incorporating a transmitter and dial keys and slidably mounted on the main casing. Guide grooves are formed in each of the slide surface of the main casing and a back plate which is fastened to the auxiliary casing. Rail members are fitted in the slide surface of the main casing. The auxiliary casing is slidable along the rail members toward and away from an extended position while being guided by the guide grooves. The rail members each has an angled lug while the back plate is formed with two spaced pairs of angled recesses. When the auxiliary casing is slid to the extended position or a contracted position, the angled lugs selectively mate with either of the two pairs of angled recesses to lock the auxiliary casing in position.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: August 2, 1994
    Assignee: NEC Corporation
    Inventors: Hitoshi Masuda, Masataka Suzuki, Masataka Ohno, Kazuyoshi Kobayashi, Hiromitsu Nakamura
  • Patent number: 5252305
    Abstract: A process of recovering a platinum group metal from a waste catalyst comprising a first step which comprises heating and melting the catalyst impregnated with the platinum group metal, copper and/or the oxide of copper, a flux component and a reductant component to form a layer containing the metal copper into which the platinum group metal is absorbed and another layer of the oxide, and then separating the metal copper; and a second step which comprises supplying air or oxygen as an oxidant to the separated metal copper for oxidizing under heating and melting to form a layer of partially oxidized metal copper and another layer of the metal copper containing the concentrated platinum group metal, and separating it. This process enables the economical recovery of the platinum group metal from the waste catalyst in a short period of time with high recovery rate.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: October 12, 1993
    Assignees: Tanaka Kikinzoku Kogyo K.K., Dowa Mining Co., Ltd., Kosaka Smelting & Refining Co., Ltd.
    Inventors: Nobuyasu Ezawa, Hiroshi Inoue, Shoei Takada, Hitoshi Masuda
  • Patent number: 5196066
    Abstract: A facing material spray apparatus including a first tank for housing a facing material and regulating its concentration, first agitating means for agitating the facing material in the first tank, a second tank, for receiving the facing material from the first tank, provided in the vicinity of the first tank with its bottom positioned below the bottom of the first tank, second agitating means for agitating the facing material in the second tank, a connecting pipe for connecting the first and second tanks to each other and causing the facing material in the first tank to naturally flow into the second tank, a valve attached to the connecting pipe for opening and closing a facing material supply passage, a facing pump removably attached to the second tank for sucking the facing material in the second tank, a nozzle attached to the facing pump through a hose for spraying the sucked facing material on a mold, and a facing material receiving base provided in the vicinity of the second tank for receiving the facing
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: March 23, 1993
    Assignee: Kusuda Company Limited
    Inventors: Motoo Kusuda, Hirokazu Ueda, Hitoshi Masuda
  • Patent number: 4919624
    Abstract: A connection terminal structure of a cordless telephone or similar electronic equipment to which an instrument having a connector is connectable for measuring electrical characteristics of the equipment, writing information in a storage built in the equipment, and other similar purposes. The equipment has a casing which includes a battery containing section. An opening is formed through the bottom of the battery containing section in the deepest portion of the latter, while conductive terminal members are provided on a printed circuit board which is mounted in the housing and are so positioned as to face the opening. When a cover closing the battery containing section is removed, the connector of the instrument may be inserted in the battery containing section. Contact pins provided on the connector are movable into and out of contact with the conductive terminal members on the printed circuit board via the slot.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: April 24, 1990
    Assignee: NEC Corporation
    Inventor: Hitoshi Masuda
  • Patent number: 4827516
    Abstract: A speech analysis apparatus according to the invention, comprising a transforming section for receiving a spectrum envelope, for transforming the spectrum envelope such magnitude data thereof becomes suitable, and for generating a transformed spectrum envelope, an integrator for receiving the transformed spectrum envelope output from the transforming section, for integrating the input spectrum envelope with respect to a predetermined variable, and for outputting an integrated spectrum envelope, and a projection circuit for receiving the transformed spectrum envelope from the transform circuit and the integrated spectrum envelope from the integrator, and for projecting the spectrum envelope with respect to the integrated data. Therefore, the analysis result inherent to the phoneme can be obtained regardless of vocal tract lengths. The spectrum envelope to be projected can be integrated by the integrator, along the frequency axis or the mel axis.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: May 2, 1989
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Yusuke Tsukahara, Hitoshi Masuda, Mikio Yamaguchi, Masao Tanabe
  • Patent number: 4614586
    Abstract: A semipermeable membrane having a surface comprised of a poly(arylacetylene) having at least a part of its benzene nuclei introduced with sulfonic acid groups. The poly(arylacetylene) is represented by the following structural formula (I): ##STR1## wherein X stands for Cl, Br or CH.sub.3, R stands for H or CH.sub.3 and n is a positive integer. The semipermeable membrane may be obtained by subjecting a membrane formed of the poly(arylacetylene) of the formula (I) to sulfonation conditions or by sulfonating the poly(arylacetylene) of the formula (I), and forming the sulfonated product into membrane.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: September 30, 1986
    Assignees: Director-General of Agency of Industrial Science & Technology, Sanyo Kasei Kogyo Kabushiki Kaisha
    Inventors: Hitoshi Masuda, Koichi Takada, Yoshiro Nakata
  • Patent number: 4517096
    Abstract: A novel method is disclosed which enables gallium and/or indium to be selectively separated and concentrated from a solution containing them in very low concentrations together with many other metal ions in rather high concentrations. The solution is passed through a bed of a chelating ion exchange resin having an amino carboxylic acid group either immediately or after the pH adjustment. Gallium and/or indium adsorbed on the chelate resin is desorbed by eluting with a mineral acid. The eluate, after the pH adjustment, is passed through another bed of a chelating ion exchange resin having an amino carboxylic acid group, and the resin is treated with a mineral acid to elute the metal ions adsorbed on the resin to thereby recover gallium and/or indium in the form of a concentrated solution.
    Type: Grant
    Filed: April 4, 1984
    Date of Patent: May 14, 1985
    Assignees: Dowa Mining Co., Ltd., Unitika, Ltd.
    Inventors: Kunio Sekine, Hitoshi Masuda, Kodo Ishibashi, Masahide Hirai, Shozo Tomoshige, Kozo Kondo
  • Patent number: D281974
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: December 31, 1985
    Assignee: NEC Corporation
    Inventors: Masataka Suzuki, Hitoshi Masuda
  • Patent number: D353808
    Type: Grant
    Filed: September 23, 1993
    Date of Patent: December 27, 1994
    Assignees: NEC Corporation, NEC Saitama, Ltd.
    Inventors: Tetsuya Taniguchi, Minoru Hotsumi, Hitoshi Masuda, Kozo Maemura