Patents by Inventor Michiei Nakamura

Michiei Nakamura 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: 8361218
    Abstract: The present invention provides an image-recording/pixel-forming coloring composition containing a phthalocyanine type colorant having at least one group selected from alkyl and alkyloxy groups (alkylphthalocyanine type colorant). According to the present invention, there can also be provided a coloring composition containing a phthalocyanine type colorant capable of exhibiting excellent properties when used as an image-recording coloring composition or pixel-forming coloring composition, production processes of the phthalocyanine type colorants, a coloring method, and the like.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: January 29, 2013
    Assignee: Dainischiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Atsushi Nogami, Toshiyasu Fujita, Masanori Takakamo, Shigeru Sakamoto, Michiei Nakamura
  • Patent number: 7993446
    Abstract: This invention relates to a dispersant for an organic pigment comprising a compound represented by the below-described formula (1) or (2), and also to its use. According to the present invention, it is possible to provide a dispersant or the like, which can afford a coating formulation for a color filter. The coating formulation is prevented from an increase in viscosity and a reduction in storage stability even when the concentration of a pigment is high, and can fabricate the color filter with excellent transparency and color quality.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: August 9, 2011
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Hiroaki Saikatsu, Hiromitsu Yanagimoto, Naoto Kamata, Michiei Nakamura
  • Patent number: 7888398
    Abstract: This present invention can provide a novel pigment useful in color image displays to form blue pixels capable of providing high-level brightness and saturation, especially a finely-divided pigment which has bright hue and is excellent in pigment physical properties such as light fastness, solvent resistance and heat resistance, and a process for producing the same, a pigment dispersion making use of the pigment, and an ink for a color filters. The novel pigment is produced by forming into a pigment a subphthalocyanine represented by the following formula (1): wherein X is a halogen atom, presents diffraction peaks at diffraction angles (2?) 7.0°, 12.3°, 20.4° and 23.4° in x-ray diffraction, and has an average particle size of 120 to 20 nm.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: February 15, 2011
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Naoki Hirata, Hisao Okamoto, Yoshiyuki Zama, Michiei Nakamura, Tetsuya Yanagimoto, Hiroaki Yamada, Masahiro Tsuchiya
  • Publication number: 20100315733
    Abstract: This invention relates to a dispersant for an organic pigment comprising a compound represented by the below-described formula (1) or (2), and also to its use. According to the present invention, it is possible to provide a dispersant or the like, which can afford a coating formulation for a color filter. The coating formulation is prevented from an increase in viscosity and a reduction in storage stability even when the concentration of a pigment is high, and can fabricate the color filter with excellent transparency and color quality.
    Type: Application
    Filed: January 30, 2008
    Publication date: December 16, 2010
    Applicant: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
    Inventors: Hiroaki Saikatsu, Hiromitsu Yanagimoto, Naoto Kamata, Michiei Nakamura
  • Publication number: 20100291359
    Abstract: The present invention provides an image-recording/pixel-forming coloring composition containing a phthalocyanine type colorant having at least one group selected from alkyl and alkyloxy groups (alkylphthalocyanine type colorant). According to the present invention, there can also be provided a coloring composition containing a phthalocyanine type colorant capable of exhibiting excellent properties when used as an image-recording coloring composition or pixel-forming coloring composition, production processes of the phthalocyanine type colorants, a coloring method, and the like.
    Type: Application
    Filed: May 5, 2010
    Publication date: November 18, 2010
    Applicant: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Atsushi Nogami, Toshiyasu Fujita, Masanori Takakamo, Shigeru Sakamoto, Michiei Nakamura
  • Publication number: 20100292412
    Abstract: This invention provides a process for producing a crystallized polyester resin molding. The process includes melting and injecting the below-described first or second compound (a) or (b) into a mold and holding the same in the mold, and then conducting cooling to crystallize a polyester resin of a resulting molding without using an inorganic nucleating agent: (a) a first compound of a crystallization-inducing crosslinked polyester resin, in at least a portion of which crosslinked points have been formed with a crosslink forming agent, and a first non-crosslinked polyester resin; or (b) a second compound of a crystallization-inducing master batch, which comprises the crosslinked polyester resin and a second non-crosslinked polyester resin and abundantly contains the crosslinked polyester resin, and the first non-crosslinked polyester resin.
    Type: Application
    Filed: May 5, 2010
    Publication date: November 18, 2010
    Applicant: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Masayuki Shibata, Yuichi Yanai, Takahiro Imai, Hiromichi Ueno, Yoshinori Konno, Junichi Ito, Takaaki Osanai, Michiei Nakamura
  • Publication number: 20100036060
    Abstract: Ion-conducting (co)polymer media and ion-conducting oligomer media close in ion conductivity to organic-solvent-based electrolytes can be produced easily and safely on industrial scale. These ion-conducting (co)polymer media use (co)polymers containing at least one cyclocarbonato group, and these ion-conducting oligomer media employ oligomers containing at least two cyclocarbonato groups.
    Type: Application
    Filed: October 14, 2009
    Publication date: February 11, 2010
    Applicant: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Michiei Nakamura, Sachio Yoshikawa, Minoru Takizawa, Toshiyasu Fujita, Seiji Doi, Nobuhiro Kihara
  • Patent number: 7611572
    Abstract: A pixel-forming colorant composition contains at least one green colorant selected from the group consisting of the following pigments (A) and (B) and pigment derivative (C): (A) a copper phthalocyanine green pigment obtained by reacting at least one of a phthalic acid substituted on average with from 3.5 to 4.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: November 3, 2009
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Atsushi Nogami, Takami Minami, Shigeru Sakamoto, Hisao Okamoto, Yoshimasa Tsuchiya, Masanori Takakamo, Nakaji Komiyama, Michiei Nakamura
  • Patent number: 7553365
    Abstract: An aqueous pigment dispersion is produced by ultrafinely dispersing a pigment dispersion mixture, which has been obtained by mixing at least a pigment and a dispersant in an aqueous medium, with microbeads having diameters of not smaller than 0.02 mm but smaller than 0.2 mm. A color composition for a color filter is produced by dispersing a mixture of a pigment, a dispersant, a resin varnish and a solvent with the microbeads in a mill.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: June 30, 2009
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Shigeru Sakamoto, Yoshimasa Tsuchiya, Masanori Takakamo, Tohru Hosoda, Akio Yoshida, Michiei Nakamura, Naoyuki Sakai, Dai Watanabe, Hideyuki Koiso, Kenji Ogawa
  • Publication number: 20080255931
    Abstract: There is provided a print ink system used for printing “a print IT shopping-linked printed matter” used in a commodity sales method in which a commodity can be ordered by converting a commodity information image in an imaged partition into an electric signal and transmitting it via a predetermined network, and by replying the order of the commodity, the order for the commodity is received and the commodity is sent, and furthermore, charging for the commodity cost is performed. The print ink system uses a combination of a print ink (a) for printing “a visible image of a commodity” (A) and a print ink (b) for printing “a commodity information code” (B).
    Type: Application
    Filed: March 29, 2005
    Publication date: October 16, 2008
    Applicants: DAINICHISEIKA COLOR & CHEMICALS MFG. CO. LTD., MULTI-MEDIA COMPUTERIZED CO., LTD.
    Inventors: Hiroshi Kosho, Kazuo Sano, Osamu Harada, Shinichiro Egi, Kazuyori Matsumoto, Satoshi Osonoi, Michiei Nakamura, Izumi Mizuno, Susumu Isozaki
  • Patent number: 7393404
    Abstract: A pigment dispersant contains the following component (a) alone or the following components (a) and (b) in combination: Component (a): a composite pigment formed of a diketopyrrolopyrrole pigment having a sulfonic group and another diketopyrrolopyrrole pigment having no sulfonic group, wherein the number of sulfonic group per molecule of the diketopyrrolopyrrole pigments in the composite pigment is from 0.05 to 0.5; and Component (b): a pigment other than the component (a), wherein the pigment has a sulfonic group or its metal salt, ammonium salt or amine salt. Also disclosed are a colored composition for color filters, a process for the fabrication of a color filter, the color filter fabricated by the process, an image display device including the color filter, and an information communication equipment including the image display device.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: July 1, 2008
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Hiroaki Saikatsu, Hiromitsu Yanagimoto, Naoto Kamata, Kazuhito Ooki, Yutaka Miura, Shigeru Sakamoto, Akio Yoshida, Michiei Nakamura
  • Patent number: 7368148
    Abstract: Color filters can each be fabricated by printing a pixel pattern for the color filter on a flexible plastic film by a central impression cylinder press. The pixel pattern is formed of pixels of three primary colors consisting of red, green and blue or pixels of three primary colors consisting of yellow, magenta and cyan. Also disclosed are inks, color filters, and image displays using the color filters.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: May 6, 2008
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Michiei Nakamura, Shigeru Sakamoto, Toshio Yamaguchi, Mamoru Tsukano, Toshiyasu Fujita, Akio Yoshida
  • Publication number: 20080096999
    Abstract: This invention provides a novel pigment, which is used, for example, in color image display devices and can form a blue pixel capable of providing a high level of bright saturation, particularly a refined pigment, which has bright hue and is excellent in pigment properties such as lightfastness, solvent resistance and heat resistance, and a process for producing the same, a pigment dispersion using the pigment, and an ink for a color filter. The novel pigment is a subphthalocyanine pigment that is prepared by converting subphthalocyanine represented by general formula (1), in which X represents a halogen atom, to a pigment, has diffraction peaks at least at diffraction angles (2?) 7.0°, 12.3°, 20.4° and 23.4° in X-ray diffraction and an average particle diameter of 120 to 20 nm.
    Type: Application
    Filed: July 26, 2005
    Publication date: April 24, 2008
    Inventors: Naoki Hirata, Hisao Okamoto, Yoshiyuki Zama, Michiei Nakamura, Tetsuya Yanagimoto, Hiroaki Yamada, Masahiro Tsuchiya
  • Patent number: 7361698
    Abstract: A water-based pigment ink contains a pigment, a hydrophilic dispersant, an aqueous medium, an alkali agent for solubilizing the hydrophilic dispersant in the aqueous medium, and a hydrophilic compound having at least one structural unit of “hydrophobic molecular chain-hydrophilic molecular chain-hydrophobic molecular chain” in a structure thereof. The water-based pigment ink is suited especially as an ink for ink-jet printers.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: April 22, 2008
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Michiei Nakamura, Naoyuki Sakai, Hiroyuki Shimanaka, Dai Watanabe, Kenji Ogawa, Yoshiyuki Zama, Hisao Okamoto, Atsushi Nogami, Kazuo Kanou, Tohru Hosoda
  • Patent number: 7347894
    Abstract: There is disclosed a pigment dispersant comprises the compound represented by the following formula (I) or a metal salt, ammonium salt, amine salt or alkylammoniumchloride salt thereof. Also disclosed are a colored composition for CF, a process for the fabrication of a CF, the color filter fabricated by the process, an image display device including the color filter, and an information communication equipment including the image display device.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: March 25, 2008
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Hiromitsu Yanagimoto, Hiroaki Saikatsu, Naoto Kamata, Shigeru Sakamoto, Akio Yoshida, Michiei Nakamura
  • Patent number: 7253229
    Abstract: Polymer-bonded functional agents are each obtained by reacting a functional agent containing reactive groups with a polymer containing groups reactive with the reactive groups of the functional agent. The functional agent comprises at least one functional agent selected from the group consisting of antioxidants, ultraviolet absorbers, light stabilizers, infrared absorbers and antistatic agents. Use of these polymer-bonded functional agents can provide articles with improved functions.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: August 7, 2007
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Michiei Nakamura, Hiromitsu Yanagimoto, Hiroyuki Shimanaka, Rokuya Yamashita
  • Patent number: 7232853
    Abstract: Colored fine particulate resins can each be produced by bringing a colored resin, which comprises a thermally fusible resin and a colorant evenly distributed in the thermally fusible resin, into a molten state; forming the colored resin, which is in the molten state, into droplet-shaped fine particles in a non-dissolving medium which does not dissolve the colored resin; and then cooling and solidifying the droplet-shaped fine particles. The colored fine particulate resins are useful in image recording materials, printing materials and paints. Articles can be colored with the image recording materials, printing materials or paints.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: June 19, 2007
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Michiei Nakamura, Shigeru Takarada, Hiroyuki Shimanaka, Kotaro Ohshima, Shinya Tuchida
  • Patent number: 7138211
    Abstract: A solidifying material for a cell electrolyte solution is a block copolymer, which comprises, as segments A, a polymer non-compatible with the cell electrolyte solution and, as segments B, a polymer compatible with the cell electrolyte solution. The solidifying material absorbs and solidifies the cell electrolyte solution. A smallest unit of the block copolymer is A-B-A. To each of the segments B, at least one group selected from the group consisting of a carboxyl group, an ester group, a hydroxyl group, a sulfonic group, an amino group, a cyclic carbonate group and a polyoxyalkylene group is bonded via a —S— bond or a —C— bond.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: November 21, 2006
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Minoru Takizawa, Yoshifumi Sugito, Naomi Oguma, Seiji Doi, Sachio Yoshikawa, Michiei Nakamura
  • Patent number: 7135062
    Abstract: Image-recording, hydrophilic colorants having an organic pigment linked to a hydrophilic compound through a linking group and which are capable of forming images excellent in print quality such as chroma, gloss, density, light fastness and abrasion fastness, and also as hydrophilic colorants capable of affording inks excellent in physical properties such as long-term storability and press stability are described.
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: November 14, 2006
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Michiei Nakamura, Hideyuki Koiso, Naoyuki Sakai, Yoshiyuki Zama, Atsushi Nogami, Hiroyuki Shimanaka, Seishichi Sasaki, Hiroaki Saikatsu
  • Publication number: 20060241227
    Abstract: There is disclosed a pigment dispersant comprises the compound represented by the following formula (I) or a metal salt, ammonium salt, amine salt or alkylammoniumchloride salt thereof. Also disclosed are a colored composition for CF, a process for the fabrication of a CF, the color filter fabricated by the process, an image display device including the color filter, and an information communication equipment including the image display device. These colored composition, process, color filter, image display device and information communication equipment all make either direct or indirect use of the pigment dispersant.
    Type: Application
    Filed: April 6, 2006
    Publication date: October 26, 2006
    Applicant: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Hiromitsu Yanagimoto, Hiroaki Saikatsu, Naoto Kamata, Shigeru Sakamoto, Akio Yoshida, Michiei Nakamura