Patents by Inventor Hideaki Maekawa

Hideaki Maekawa 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: 8704287
    Abstract: A semiconductor memory includes a memory cell array area provided with first and second memory cells and having a first active area and a first element isolation area constituting a line & space structure, and having a floating gate electrode and a control gate electrode in the first active area, a word line contact area adjacent to the memory cell array area and having a second active area, first and second word lines with a metal silicide structure, functioning respectively as the control gate electrodes of the first and second memory cells and arranged to straddle the memory cell array area and the word line contact area. A dummy gate electrode is arranged just below the first and second word lines in the second active area.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: April 22, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hideaki Maekawa
  • Patent number: 8525249
    Abstract: A semiconductor memory includes a memory cell array area provided with first and second memory cells and having a first active area and a first element isolation area constituting a line & space structure, and having a floating gate electrode and a control gate electrode in the first active area, a word line contact area adjacent to the memory cell array area and having a second active area, first and second word lines with a metal silicide structure, functioning respectively as the control gate electrodes of the first and second memory cells and arranged to straddle the memory cell array area and the word line contact area. A dummy gate electrode is arranged just below the first and second word lines in the second active area.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: September 3, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hideaki Maekawa
  • Patent number: 8395205
    Abstract: A semiconductor memory includes a memory cell array area provided with first and second memory cells and having a first active area and a first element isolation area constituting a line & space structure, and having a floating gate electrode and a control gate electrode in the first active area, a word line contact area adjacent to the memory cell array area and having a second active area, first and second word lines with a metal silicide structure, functioning respectively as the control gate electrodes of the first and second memory cells and arranged to straddle the memory cell array area and the word line contact area. A dummy gate electrode is arranged just below the first and second word lines in the second active area.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: March 12, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hideaki Maekawa
  • Patent number: 8241999
    Abstract: A semiconductor device has a circuit element region formed on a semiconductor substrate, and a protective pattern formed so as to surround the circuit element region.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: August 14, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takafumi Ikeda, Takahito Nakazawa, Hideaki Maekawa, Yuuichi Tatsumi, Toshifumi Minami
  • Publication number: 20120061742
    Abstract: A semiconductor memory includes a memory cell array area provided with first and second memory cells and having a first active area and a first element isolation area constituting a line & space structure, and having a floating gate electrode and a control gate electrode in the first active area, a word line contact area adjacent to the memory cell array area and having a second active area, first and second word lines with a metal silicide structure, functioning respectively as the control gate electrodes of the first and second memory cells and arranged to straddle the memory cell array area and the word line contact area. A dummy gate electrode is arranged just below the first and second word lines in the second active area.
    Type: Application
    Filed: November 21, 2011
    Publication date: March 15, 2012
    Inventor: Hideaki MAEKAWA
  • Publication number: 20120020158
    Abstract: A memory cell array includes memory strings arranged in a first direction. Word-lines and select gate lines extend in a second direction perpendicular to the first direction. The select gate line also extends in the second direction. The word-lines have a first line width in the first direction and arranged with a first distance therebetween. The select gate line includes a first interconnection in the first direction, the first interconnection having a second line width larger than the first line width, and a second interconnection extending from an end portion of the first interconnection, the second interconnection having a third line width the same as the first line width. A first word-line adjacent to the select gate line is arranged having a second distance to the second interconnection, the second distance being (4N+1) times the first distance (N being an integer of 1 or more).
    Type: Application
    Filed: July 20, 2011
    Publication date: January 26, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tohru OZAKI, Mitsuhiro Noguchi, Hideaki Maekawa, Hiromitsu Mashita, Takafumi Taguchi, Kazuhito Kobayashi, Hidefumi Mukai, Hiroyuki Nitta
  • Patent number: 8076205
    Abstract: A semiconductor memory includes a memory cell array area provided with first and second memory cells and having a first active area and a first element isolation area constituting a line & space structure, and having a floating gate electrode and a control gate electrode in the first active area, a word line contact area adjacent to the memory cell array area and having a second active area, first and second word lines with a metal silicide structure, functioning respectively as the control gate electrodes of the first and second memory cells and arranged to straddle the memory cell array area and the word line contact area. A dummy gate electrode is arranged just below the first and second word lines in the second active area.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: December 13, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hideaki Maekawa
  • Publication number: 20110183511
    Abstract: A semiconductor memory includes a memory cell array area provided with first and second memory cells and having a first active area and a first element isolation area constituting a line & space structure, and having a floating gate electrode and a control gate electrode in the first active area, a word line contact area adjacent to the memory cell array area and having a second active area, first and second word lines with a metal silicide structure, functioning respectively as the control gate electrodes of the first and second memory cells and arranged to straddle the memory cell array area and the word line contact area. A dummy gate electrode is arranged just below the first and second word lines in the second active area.
    Type: Application
    Filed: April 6, 2011
    Publication date: July 28, 2011
    Inventor: Hideaki MAEKAWA
  • Patent number: 7948021
    Abstract: A semiconductor memory includes a memory cell array area provided with first and second memory cells and having a first active area and a first element isolation area constituting a line & space structure, and having a floating gate electrode and a control gate electrode in the first active area, a word line contact area adjacent to the memory cell array area and having a second active area, first and second word lines with a metal silicide structure, functioning respectively as the control gate electrodes of the first and second memory cells and arranged to straddle the memory cell array area and the word line contact area. A dummy gate electrode is arranged just below the first and second word lines in the second active area.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: May 24, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hideaki Maekawa
  • Publication number: 20100237438
    Abstract: A semiconductor device has a circuit element region formed on a semiconductor substrate, and a protective pattern formed so as to surround the circuit element region.
    Type: Application
    Filed: February 16, 2010
    Publication date: September 23, 2010
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Takafumi IKEDA, Takahito Nakazawa, Hideaki Maekawa, Yuuichi Tatsumi, Toshifumi Minami
  • Publication number: 20080277713
    Abstract: A semiconductor memory includes a memory cell array area provided with first and second memory cells and having a first active area and a first element isolation area constituting a line & space structure, and having a floating gate electrode and a control gate electrode in the first active area, a word line contact area adjacent to the memory cell array area and having a second active area, first and second word lines with a metal silicide structure, functioning respectively as the control gate electrodes of the first and second memory cells and arranged to straddle the memory cell array area and the word line contact area. A dummy gate electrode is arranged just below the first and second word lines in the second active area.
    Type: Application
    Filed: April 23, 2008
    Publication date: November 13, 2008
    Inventor: Hideaki MAEKAWA
  • Patent number: 5834835
    Abstract: In the semiconductor of the present invention, the first pair of pad lines consisting of a plurality of pads are arranged on the bottom portion of the recess portion of the enclosure, the recess portion being made at the center portion of the enclosure by the counterboring process to have a predetermined depth. At approximately center of the recess portion, a suction opening is made so as to suck the potting material from outside. In the recess portion of the enclosure, the semiconductor chip is supported. The semiconductor chip has the second pair of pad lines arranged to oppose to the first pair of pad lines and electrically connected to the first pair of pad lines respectively. The potting material is poured into the recess portion so as to completely cover the semiconductor chip. At the same time, the potting material is sucked from the suction opening.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: November 10, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hideaki Maekawa
  • Patent number: 5278040
    Abstract: A reflective silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a reflective support having thereon a silver halide emulsion layer wherein the support have an oxygen permeability of not more than 2.0 ml/m.sup.2 .multidot.hr.multidot.atm and the silver halide emulsion layer contains a magenta coupler represented by the following Formula I; ##STR1## wherein Ar is an aryl group; Y is a hydrogen atom or a substituent capable of splitting off upon reaction with the oxidation product of a color developing agent; X is a halogen atom, an alkoxy group or an alkyl group; R is a strait- or branched-chain alkyl group having 1 to 20 carbon atoms; J is a strait- or branched-chain alkylene group; and n is an integer of from 0 to 4, when n is 2 or more, the plurality of Xs may be the same or different. The light-sensitive material is excellent in red color reproducibility and light fastness of red colored images.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: January 11, 1994
    Assignee: Konica Corporation
    Inventors: Yukio Ohya, Shuji Murakami, Masanobu Miyoshi, Hideaki Maekawa
  • Patent number: 5134060
    Abstract: A silver halide photographic emulsion containing silver halide grains having a silver chloride content of not less than 90 mol % and a method for preparing thereof are disclosed, wherein the silver halide grains are obtained by forming said silver halide grains in the presence of a water-soluble iridium compound and a nitrogen-containing heterocyclic compound capable of forming sparingly-soluble silver salt; and by controlling the addition of said iridium compound, whereby the photographic emulsion is improved in the dependence of gradation on exposure intensity.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: July 28, 1992
    Assignee: Konica Corporation
    Inventors: Hideaki Maekawa, Makoto Kajiwara, Masanobu Miyoshi, Mitsuhiro Okumura
  • Patent number: 5070008
    Abstract: A light-sensitive silver halide photographic material which comprises a support and provided thereon a silver halide emulsion layer containing silver halide grains of which silver chloride content is not less than 90 mol %, and which have been formed in the presence of an iridium compound and a nitrogen containing heterocyclic compound, and under acidic condition is disclosed.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: December 3, 1991
    Assignee: Konica Corporation
    Inventors: Hideaki Maekawa, Masanobu Miyoshi