Patents by Inventor Sho Masujima

Sho Masujima 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: 6136168
    Abstract: A clean transfer method and an apparatus therefor capable of receiving, storing and transferring a transferred object by means of a vacuum clean box while eliminating arrangement of any vacuum evacuation means and transfer means in the vacuum clean box, as well as facilitating connection of the vacuum clean box to various processing units. The vacuum clean box is free of any vacuum evacuation means and transfer means and is provided with a first opening selectively closed with a first shutter and kept airtight when the first opening is closed with the first shutter. The vacuum clean box is airtightly connected to a sputter unit which is provided with a second opening selectively closed with a second shutter, when the first and second openings are closed with the first and second shutters, respectively, resulting in forming a closed space therebetween through which the first and second shutters are opposite to each other.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: October 24, 2000
    Assignee: TDK Corporation
    Inventors: Sho Masujima, Eisaku Miyauchi, Toshihiko Miyajima, Hideaki Watanabe
  • Patent number: 6062808
    Abstract: A clean transfer method and an apparatus therefor capable of facilitating storage and transfer of transferred objects by a vacuum clean box and realizing transfer of the objects to various processing units other than a vacuum unit. A vacuum clean box and a clean unit are airtightly connected to each other. The vacuum clean box includes a first shutter acting also as a lid and arranged so as to airtightly close a first opening of the box. The clean unit is provided with a second opening selectively closed by a second shutter. Airtight connection between the vacuum clean box and the clean unit is carried out while keeping the first and second openings closed by the first and second shutters, respectively, to thereby form a closed space therebetween which the first and second shutters face. Then, the closed space is evacuated to a vacuum, followed by opening of only the first shutter.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: May 16, 2000
    Assignee: TDK Corporation
    Inventors: Sho Masujima, Eisaku Miyauchi, Toshihiko Miyajima, Hideaki Watanabe
  • Patent number: 5730573
    Abstract: A clean transfer method and an apparatus therefor capable of facilitating storage and transfer of transferred objects by a vacuum clean box and realizing transfer of the objects to various processing units other than a vacuum unit. A vacuum clean box and a clean unit are airtightly connected to each other. The vacuum clean box includes a first shutter acting also as a lid and arranged so as to airtightly close a first opening of the box. The clean unit is provided with a second opening selectively closed by a second shutter. Airtight connection between the vacuum clean box and the clean unit is carried out while keeping the first and second openings closed by the first and second shutters, respectively, to thereby form a closed space therebetween which the first and second shutters face. Then, the closed space is evacuated to a vacuum, followed by opening of only the first shutter.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: March 24, 1998
    Assignee: TDK Corporation
    Inventors: Sho Masujima, Eisaku Miyauchi, Toshihiko Miyajima, Hideaki Watanabe
  • Patent number: 5089314
    Abstract: A carrier tape for electronic circuit elements adapted to be provisionally held on printed circuit boards prior to fixing of them on said printed circuit boards by soldering, comprises a flexible tape body extending in a longitudinal direction, and adhesive means applied with respect to the tape body and for serving the purpose of provisionally holding of electronic circuit elements on printed circuit boards, the adhesive means being formed of a material which exhibits adhesion upon being heated. The adhesive means is formed of a polymeric material which exhibits adhesion upon being heated. The carrier tape further includes electronic circuit elements held with respect to the tape body at equal intervals in a row in the longitudinal direction of the tape body through the adhesive means, thereby constituting an electronic circuit element series.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: February 18, 1992
    Assignee: TDK Corporation
    Inventors: Sho Masujima, Hiroshi Yagi, Atsuzo Tamashima, Masakazu Kamoshida
  • Patent number: 4873397
    Abstract: An electronic circuit element capable of positively and stably accomplishing its provisional fixing on a printed circuit board substantially free of any trouble and being readily taken out or extracted for the mounting on a printed circuit board, irrespective of a manner of holding of the circuit element prior to the extraction. The electronic circuit element includes an element body and an adhesive or polymeric layer deposited on the element body. The polymeric layer is arranged on a surface of the element body opposite to a printed circuit board on which the circuit element is to be mounted. The polymeric layer is formed of a material exhibiting adhesion when it is heated to a temperature of about 80.degree. C.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: October 10, 1989
    Assignee: TDK Corporation
    Inventors: Sho Masujima, Hiroshi Yagi, Atsuzo Tamashima, Jun Tamashima
  • Patent number: 4829663
    Abstract: A method of mounting surface-mounted type electronic components on a printed circuit board adapted to be carried out using an electronic component series which comprises a carrier tape formed with a plurality of tiny recess portions for receiving therein adhesives for use in temporary fixing of surface-mounted type electronic components on a printed circuit board, adhesives received in the respective recess portions, and a plurality of surface-mounted type electronic components held on the carrier tape through the adhesives.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: May 16, 1989
    Assignee: TDK Corporation
    Inventors: Sho Masujima, Hiroshi Yagi, Masakazu Kamoshida, Atsuzo Tamashima
  • Patent number: 4484251
    Abstract: A current restriction device for alternate circuit with small size, low producing cost and low power loss has been found by using a ferro-electric body with rectangular hysterisis characteristics. Said device is used for instance as a ballast for restricting current in a fluorescent lamp. Said ferro-electric body has main component of B.sub.a T.sub.i O.sub.3, additive of S.sub.r or P.sub.b for substitution of part of B.sub.a and Z.sub.n or S.sub.n for substitution of part of T.sub.i, and a mineralizer of M.sub.n o or C.sub.r2 O.sub.3. The voltage-current characteristics of said ferro-electric body show non-linearity that the impedance ratio (Z.sub.2 /Z.sub.1) of the impedance Z.sub.2 measured with alternate field of 500 volts/mm to the impedance Z.sub.1 measured with alternate field of 5 volts/mm is less than 1/10.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: November 20, 1984
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Sho Masujima, Yoshishige Towatari, Shoichi Iwaya, Hitoshi Masumura, Hisao Abe, Norimasa Sakamoto
  • Patent number: 4447549
    Abstract: A D-E hysteresis loop of ferroelectrics known in the art has a square shape when the ferroelectrics are a BaTiO.sub.3 single crystal. Such ferroelectrics are used as a non-linear dielectric element of, for example a pulse generating device. The non-linear dielectric element according to the present invention consists of a polycrystal, which is mainly composed of BaTiO.sub.3 and has the chemical composition expressed by the formula A.sub.y B.sub.z O.sub.3, wherein the molar ratio of y/z ranges from 0.92 to 0.99. The non-linearity is excellent and the temperature dependence of the A.sub.y B.sub.z O.sub.3 composition is considerably low.
    Type: Grant
    Filed: March 22, 1983
    Date of Patent: May 8, 1984
    Assignee: TDK Kabushiki Kaisha
    Inventors: Sho Masujima, Masahide Shibuya, Iwaya Shoichi, Kenichi Umeda, Yasunobu Oikawa, Hisao Abe, Yoshifumi Midori, Shinobu Fujiwara, Nobuaki Kikuchi
  • Patent number: 4346537
    Abstract: A capacitor trimming system for a quartz-crystal oscillator in a watch and/or a clock for providing a punctual watch and/or a clock has been found. The system comprises an oscillation circuit including at least a quartz-crystal piece, a trimmer capacitor for adjusting the oscillating frequency of the quartz-crystal piece, a semiconductor electronic circuit for operating said quartz-crystal piece, and apparatus for adjusting automatically the trimmer capacitor so that the oscillating frequency becomes the same as the desired reference frequency. The trimmer capacitor comprises of at least a fixed outer trimming electrode, an inner common electrode fixed parallel to said trimming electrode and a dielectric body sandwiched between the two electrodes.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: August 31, 1982
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Sho Masujima, Shoichi Iwaya
  • Patent number: 4312026
    Abstract: A chip capacitor which has a substantially rectangular dielectric body having a pair of long sides, a pair of short sides perpendicular to said long sides, a pair of conductive confronting electrodes attached on the surface of the dielectric body so that the electrodes sandwich the dielectric body, a pair of terminals each provided along the related short side of the dielectric body and being electrically connected to the related electrode, and the junction point of each long side and each short side of the dielectric body is recessed. Preferably, the dielectric body is tapered towards the short sides.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: January 19, 1982
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Shoichi Iwaya, Sho Masujima
  • Patent number: 4243139
    Abstract: In an apparatus and process for transport and support of electronic components, the leads of the components are mounted transversely and parallel to each other on a support strip adapted for being moved in a longitudinal direction. The leads are mounted so that they are parallel to each other and equidistant and held firmly in position by adhesive tape of specified thickness in relation to the thickness of the support strip. The leads protrude from at least one edge of the support strip to facilitate attachment of electronic components. Positive positioning of the leads at accurately spaced distances is achieved.
    Type: Grant
    Filed: April 27, 1977
    Date of Patent: January 6, 1981
    Assignee: Tokyo Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Sho Masujima, Yamamoto Yoshihito
  • Patent number: D257716
    Type: Grant
    Filed: September 13, 1977
    Date of Patent: December 30, 1980
    Assignee: TDK Electronics Company, Limited
    Inventor: Sho Masujima