Patents by Inventor Eiichiro Tanaka

Eiichiro Tanaka 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: 5477047
    Abstract: A direct-contact type image sensor device according to the present invention includes: a light-transmitting substrate having an upper surface and a lower surface; a patterned conductor layer formed over the upper surface of the light-transmitting substrate; a transparent electrically conductive layer formed on the lower surface of the light-transmitting substrate; an image sensor chip mounted face-down on the upper surface of the light-transmitting substrate, with an insulating resin layer being interposed between the image sensor chip and the upper surface of the light-transmitting substrate, the image sensor chip being mounted by a flip-chip-bonding method, a light-interrupting layer provided between the patterned conductor layer and the upper surface of the light-transmitting substrate; and a light-interrupting portion for interrupting a portion of a light beam, the light beam being radiated on an original through the light-transmitting substrate by a light source disposed above the light-transmitting subs
    Type: Grant
    Filed: October 21, 1993
    Date of Patent: December 19, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahiro Nakagawa, Tetsuro Nakamura, Shinji Fujiwara, Eiichiro Tanaka
  • Patent number: 5408121
    Abstract: A semiconductor device according to the present invention includes: a light-transmitting substrate having a first surface and a second surface; a circuit conductor layer formed on the first surface of the light-transmitting substrate; a semiconductor chip having electrodes formed on a surface thereof, the semiconductor device being mounted face-down on the first surface of the light-transmitting substrate; a photo-thermal cross-linkable insulating resin layer for fixing the semiconductor chip on the light-transmitting substrate; a plated metal layer formed on at least a portion of the circuit conductor layer, the electrodes of the semiconductor chip being connected to the circuit conductor layer through the plated metal layer; an alloy layer formed in an abutting portion between each plated metal layer and the circuit conductor layer; and a second alloy layer formed in an abutting portion between each electrode and each plated metal layer, the alloy layers being formed by melting and recoagulating the plated
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: April 18, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tetsuro Nakamura, Eiichiro Tanaka, Shinji Fujiwara, Masahiro Nakagawa
  • Patent number: 5405809
    Abstract: A semiconductor device according to the present invention includes: a light-transmitting substrate having a first surface and a second surface; a circuit conductor layer formed on the first surface of the light-transmitting substrate; a semiconductor chip having electrodes formed on a surface thereof, the semiconductor device being mounted face-down on the first surface of the light-transmitting substrate; a photo-thermal cross-linkable insulating resin layer for fixing the semiconductor chip on the light-transmitting substrate; a plated metal layer formed on at least a portion of the circuit conductor layer, the electrodes of the semiconductor chip being connected to the circuit conductor layer through the plated metal layer; an alloy layer formed in an abutting portion between each plated metal layer and the circuit conductor layer; and a second alloy layer formed in an abutting portion between each electrode and each plated metal layer, the alloy layers being formed by melting and recoagulating the plated
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: April 11, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tetsuro Nakamura, Eiichiro Tanaka, Shinji Fujiwara, Masahiro Nakagawa
  • Patent number: 5191685
    Abstract: A buckle having a lock mechanism for a watch with opposite bands is disclosed. The lock mechanism (40) is provided in a frame member (20) secured to one of the bands (37). The lock mechanism comprises a lock lever (41) having a locking portion and a pressing-up lever (42) having a pressing-up slant, each of the levers being laterally slidably mounted in the frame member, and a spring (43) provided so as to outwardly urge both the levers. A clasp (30) attached to the other band has a lock member corresponding to the lock lever and a pressing-up slant member (34) corresponding to the pressing-up lever. The lock lever engages with the lock member to lock the clasp. When the lock is released, the pressing-up lever pushes up the pressing-up slant member, thereby disengaging the clasp. The locking portion of the lock lever and the pressing-up slant of the pressing-up lever are disposed so as to overlap with each other.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: March 9, 1993
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Yasushi Aoki, Masaaki Azuma, Shigeo Tsuchigane, Akihiro Tanaka, Katsuzo Hirayama, Eiichiro Tanaka
  • Patent number: 4886719
    Abstract: Disclosed is an electrophotography photosensitive member (10) and a method for fabricating the same. This electrophotography photosensitive member (10) comprises a straight chain compound polymer including (i) as main component, a straight chain compound polymer having p-phenylene in the direction of a main chain, and an element of Group VIB at a para-position, the element of Group VIB being selected from the group consisting of S, Se, Te and mixtures thereof; and (ii) oxygen atom. Since oxygen atom is included in the straight chain compound polymer, desirable characteristics are obtained. This photosensitive member (10) is produced at a low cost with a high productivity, thereby providing a high sensitivity, an excellent printing durability and a long lifetime.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: December 12, 1989
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Eiichiro Tanaka, Akio Takimoto, Koji Akiyama, Kyoko Onomichi, Masanori Watanabe, Chisato Sakahara
  • Patent number: 4722880
    Abstract: A photoconductor which comprises, on a conductive substrate, a photoconductive layer of amorphous silicon hydride to which a first impurity consisting essentially of an element of Group Va or Group VIa of the Periodic Table is added. The contents of the first impurity and hydrogen in the amorphous silicon hydride layer vary in section from one side toward the other side of said layer.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: February 2, 1988
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Etsuya Takeda, Eiichiro Tanaka, Shinji Fujiwara
  • Patent number: 4657374
    Abstract: An electrophotographic apparatus which includes a photoreceptor mainly composed of amorphous silicone and a developing device employing a developing material including electrically insulative composite components. The developing device has a developing sleeve impressed with developing bias voltage on which AC voltage is superposed, and a magnetic roller having magnetic poles and accommodated within the developing sleeve.
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: April 14, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukimasa Kuramoto, Eiichiro Tanaka
  • Patent number: 4622181
    Abstract: A process of preparing radical anions which comprises reacting sodium and a polycyclic aromatic compound in a reaction solvent to prepare radical anions and supplying androstane-1,4-diene-3,17-dione-17-acetal into the obtained reaction mixture to reduce the same into an estrone acetal, characterized in that a solvent comprising polyethers having three or more ether bonds and maintained at a concentration higher than a predetermined value is used as the reaction solvent and the reaction is carried out at a temperature of from the melting point of sodium to 105.degree. C. The process according to this invention can produce an estrone acetal at a high yield and with economical advantages in the industrial scale and the estrone acetal thus obtained is useful as an estrone precursor which is important as a female hormone.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: November 11, 1986
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Kazumasa Kinugasa, Eiichiro Tanaka, Yoshihiro Tanaka, Yoshiharu Morita
  • Patent number: 4355866
    Abstract: A stripe-color filter for spatial color encoding in a color TV camera, having a striped semiconductor filter-element-layer supported between a transparent substrate layer and a transparent dielectric covering layer. There are further provided a first coating layer of a transparent thin film between the substrate layer and the semiconductor filter-element-layer and a second coating layer of a transparent thin film between the semiconductor filter-element-layer and the covering layer. The refractive indexes of those layers are in the relationship: n.sub.F >n.sub.T1 >n.sub.S and n.sub.F >n.sub.T2 >n.sub.D, wherein n.sub.S represents the refractive index of the substrate layer, n.sub.T1 the first coating layer, n.sub.F the semiconductor filter-element-layer, n.sub.D the covering layer, and n.sub.T2 the second coating layer.
    Type: Grant
    Filed: August 20, 1980
    Date of Patent: October 26, 1982
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Eiichiro Tanaka, Kousaku Yano, Yoshitaka Aoki, Shinji Fujiwara
  • Patent number: 4281406
    Abstract: The invention relates to a thin water-proof timepiece case designed for digital electronic timepieces which employ panel-type display device such as liquid crystal display device. A glass cover, a panel cover which conceals the periphery of the display panel, and a coupling member for anchoring the screw on the back surface of the panel cover, are formed as a unitary structure. The glass cover and the case are water-tightly coupled together by the coupling member and a screw member which penetrates through the case.
    Type: Grant
    Filed: November 9, 1979
    Date of Patent: July 28, 1981
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Eiichiro Tanaka