Patents by Inventor Tetsumasa Maruo

Tetsumasa Maruo 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).

  • Publication number: 20230223513
    Abstract: A manufacturing apparatus for an electrode plate includes: a conveyance line of the electrode plate having an applied portion in which an electrode active material is applied to a surface of a base material and a non-applied portion in which the electrode active material is not applied to the surface of the base material; a compression roll provided in the conveyance line and compressing the applied portion; and a tension reducing mechanism provided in at least one of an upstream section ending at the compression roll or a downstream section starting at the compression roll in the conveyance line and reducing a tension applied to the electrode plate.
    Type: Application
    Filed: March 25, 2021
    Publication date: July 13, 2023
    Inventors: Tetsumasa MARUO, Tomofumi HIRUKAWA
  • Publication number: 20220285663
    Abstract: A roll press apparatus for producing a compressed strip-shaped electrode sheet from a strip-shaped electrode sheet including an active material portion and an active-material absent portion is provided with a pair of press rolls arranged in parallel with a roll gap and configured to roll-press the strip-shaped electrode sheet being conveyed in a longitudinal direction for compression to form a compressed active material layer, and an active-material-absent-portion stretching unit arranged upstream of the press rolls and configured to stretch the active-material absent portion of the strip-shaped electrode sheet in the longitudinal direction.
    Type: Application
    Filed: February 1, 2022
    Publication date: September 8, 2022
    Inventors: Tomofumi HIRUKAWA, Tetsumasa MARUO, Kengo HAGA, Kota NAKAMURA
  • Patent number: 8455902
    Abstract: An optical device is equipped with a light receiving region 16a and a peripheral circuit region 22 located around the light receiving region 16a on a major surface of an light receiving element 11a; electrodes for external connection 15 electrically connected to the peripheral circuit region 22 formed on a back surface opposite to the major surface of the light receiving element 11a; a transparent member 12 covering the light receiving region 16a adhered on the major surface of the light receiving element 11a with a light-transmitting adhesive 13; and a molding resin 14 for coating side surfaces of the transparent member 12 and the major surface of the light receiving element 11a excluding the region covered with the transparent member 12.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: June 4, 2013
    Assignee: Panasonic Corporation
    Inventors: Kiyokazu Itoi, Toshiyuki Fukuda, Yoshiki Takayama, Tetsushi Nishio, Tetsumasa Maruo
  • Patent number: 8080855
    Abstract: According to the present invention, a protective seal S1 for protecting a transparent member 11 is composed of an organic base 16, adhesive layers 17, and a second adhesive layer 18 having low adhesion. The adhesive layers 17 are provided only on edges corresponding, on the organic base 16, to sides 11b of the transparent member and the second adhesive layer 18 is provided on a portion corresponding, on the organic base 16, to a surface 11a of the transparent member. The organic base 16 is fixed to the sides 11b and the surface 11a of the transparent member 11 with the adhesive layers 17 and 18.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: December 20, 2011
    Assignee: Panasonic Corporation
    Inventors: Tetsumasa Maruo, Masanori Minamio, Satoru Waga, Tetsushi Nishio
  • Publication number: 20110285003
    Abstract: An optical device is equipped with a light receiving region 16a and a peripheral circuit region 22 located around the light receiving region 16a on a major surface of an light receiving element 11a; electrodes for external connection 15 electrically connected to the peripheral circuit region 22 formed on a back surface opposite to the major surface of the light receiving element 11a; a transparent member 12 covering the light receiving region 16a adhered on the major surface of the light receiving element 11a with a light-transmitting adhesive 13; and a molding resin 14 for coating side surfaces of the transparent member 12 and the major surface of the light receiving element 11a excluding the region covered with the transparent member 12.
    Type: Application
    Filed: July 28, 2011
    Publication date: November 24, 2011
    Applicant: Panasonic Corporation
    Inventors: KIYOKAZU ITOI, TOSHIYUKI FUKUDA, YOSHIKI TAKAYAMA, TETSUSHI NISHIO, TETSUMASA MARUO
  • Patent number: 8013350
    Abstract: An optical device is equipped with a light receiving region 16a and a peripheral circuit region 22 located around the light receiving region 16a on a major surface of an light receiving element 11a; electrodes for external connection 15 electrically connected to the peripheral circuit region 22 formed on a back surface opposite to the major surface of the light receiving element 11a; a transparent member 12 covering the light receiving region 16a adhered on the major surface of the light receiving element 11a with a light-transmitting adhesive 13; and a molding resin 14 for coating side surfaces of the transparent member 12 and the major surface of the light receiving element 11a excluding the region covered with the transparent member 12.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: September 6, 2011
    Assignee: Panasonic Corporation
    Inventors: Kiyokazu Itoi, Toshiyuki Fukuda, Yoshiki Takayama, Tetsushi Nishio, Tetsumasa Maruo
  • Publication number: 20100181636
    Abstract: An optical device includes the following structures. An optical element includes a light-receiving element at an upper surface of the optical element. A transparent member is disposed on the upper surface to cover the light-receiving element. A case includes a bottom wall, a side wall protruding from an outer edge of the bottom wall, and a through-hole penetrating the bottom wall. A sealant is filled in a space defined by surfaces of the optical element, the transparent member, and the case, and also in the through-hole. Here, the optical element and the transparent member are stored in a region between the bottom wall and the side wall. The sealant is filled to the region to seal the space. The bottom wall is segmented into: a center region in which the optical element is placed; and a peripheral region outside the center region. The through-hole is arranged in the peripheral region.
    Type: Application
    Filed: January 13, 2010
    Publication date: July 22, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshiki TAKAYAMA, Tetsumasa MARUO
  • Publication number: 20100176476
    Abstract: An optical device including: an optical element including a light-receiving unit as a part of a top surface; a transparent member deposited on the optical element to cover the light-receiving unit; and a sealant formed to seal around the transparent member. The transparent member includes: a first protrusion formed in an upper region of a side surface of the transparent member such that a step is created on the side surface; and a tapered surface on an end surface of the first protrusion, the tapered surface being sloped such that a to cross-sectional area of the transparent member decreases towards an upper side of the transparent member. The sealant covers entirely at least a part of the side surface of the transparent member, the part of the side surface being located below the first protrusion.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 15, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshiki TAKAYAMA, Tetsumasa MARUO
  • Publication number: 20100155917
    Abstract: A semiconductor device includes: a semiconductor element having a light receiving region or a light emitting region on which a transparent member is attached, and a plurality of electrode pads; a substrate on which the semiconductor element is provided; and a resin covering the semiconductor element and side surfaces of the transparent member. The first area corresponding to part of an upper surface of the semiconductor element, which part is covered with the resin is smaller than the second area corresponding to parts of a lower surface of the semiconductor element and a lower surface of the substrate, which parts are covered with the resin.
    Type: Application
    Filed: November 4, 2009
    Publication date: June 24, 2010
    Inventor: Tetsumasa MARUO
  • Publication number: 20090236613
    Abstract: According to the present invention, a protective seal S1 for protecting a transparent member 11 is composed of an organic base 16, adhesive layers 17, and a second adhesive layer 18 having low adhesion. The adhesive layers 17 are provided only on edges corresponding, on the organic base 16, to sides 11b of the transparent member and the second adhesive layer 18 is provided on a portion corresponding, on the organic base 16, to a surface 11a of the transparent member. The organic base is fixed to the sides 11b and the surface 11a of the transparent member 11 with the adhesive layers 17 and 18.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 24, 2009
    Applicant: Panasonic Corporation
    Inventors: Tetsumasa Maruo, Masanori Minamio, Satoru Waga, Tetsushi Nishio
  • Publication number: 20090140405
    Abstract: A semiconductor device includes: a semiconductor element; a package body having the semiconductor element bonded inside thereof and electrically connected to the semiconductor element; a lid-like member covering the semiconductor element, and bonded to the package body to form a hollow structure; and a bonding member for bonding the package body and the lid-like member to each other. The bonding member is a resin adhesive containing an epoxy resin, a polymerization initiator, and a filling material, and a content of the filling material in the bonding member is 30 wt % to 60 wt %.
    Type: Application
    Filed: September 15, 2008
    Publication date: June 4, 2009
    Inventors: Tetsumasa Maruo, Masanori Minamio, Kiyokazu Itoi
  • Publication number: 20080185603
    Abstract: An optical device is equipped with a light receiving region 16a and a peripheral circuit region 22 located around the light receiving region 16a on a major surface of an light receiving element 11a; electrodes for external connection 15 electrically connected to the peripheral circuit region 22 formed on a back surface opposite to the major surface of the light receiving element 11a; a transparent member 12 covering the light receiving region 16a adhered on the major surface of the light receiving element 11a with a light-transmitting adhesive 13; and a molding resin 14 for coating side surfaces of the transparent member 12 and the major surface of the light receiving element 11a excluding the region covered with the transparent member 12.
    Type: Application
    Filed: January 3, 2008
    Publication date: August 7, 2008
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kiyokazu Itoi, Toshiyuki Fukuda, Yoshiki Takayama, Tetsushi Nishio, Tetsumasa Maruo
  • Publication number: 20080001240
    Abstract: A solid state image pickup device 1 includes a substrate 10 on which a solid state image pickup element 14 is mounted and a transparent component 11. A polymerization initiator for bonding the substrate 10 and the transparent component 11 is onium salt having a halogen-containing aromatic compound as an anion.
    Type: Application
    Filed: February 26, 2007
    Publication date: January 3, 2008
    Inventors: Masanori Minamio, Tetsumasa Maruo, Kiyokazu Itoi, Toshiyuki Fukuda