Patents by Inventor Kenji Kaida
Kenji Kaida 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).
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Publication number: 20070209550Abstract: An aqueous dispersion comprising water-insoluble vinyl polymer particles containing C. I. Pigment Blue 15:4 as a colorant; and a water-based ink containing the aqueous dispersion. The water-based ink containing the aqueous dispersion can be suitably used as a water-based ink for inkjet recording and the like.Type: ApplicationFiled: May 17, 2007Publication date: September 13, 2007Applicant: Kao CorporationInventors: Isao Tsuru, Kenji Kaida
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Patent number: 7112619Abstract: A water-based ink containing an aqueous dispersion of water-insoluble vinyl polymer particles containing a pigment, wherein the water-insoluble vinyl polymer is prepared by copolymerizing a monomer mixture containing (a) a monomer having a salt-forming group, (b) a monomer having a long-chain alkyl group, (c) a macromer, (d) a monomer having a polyoxyalkylene group, and (e) a monomer copolymerizable with the monomer having a salt-forming group (a), the monomer having a long-chain alkyl group (b), the macromer (c) and the monomer having a polyoxyalkylene group (d). The water-based ink can be suitably used, for instance, as a water-based ink for inkjet recording and the like.Type: GrantFiled: December 22, 2003Date of Patent: September 26, 2006Assignee: Kao CorporationInventors: Makoto Sakakibara, Nobushige Tanaka, Ryuma Mizushima, Kenji Kaida, Takehiro Tsutsumi
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Publication number: 20040132942Abstract: A water-based ink containing an aqueous dispersion of water-insoluble vinyl polymer particles containing a pigment, wherein the water-insoluble vinyl polymer is prepared by copolymerizing a monomer mixture containing (a) a monomer having a salt-forming group, (b) a monomer having a long-chain alkyl group, (c) a macromer, (d) a monomer having a polyoxyalkylene group, and (e) a monomer copolymerizable with the monomer having a salt-forming group (a), the monomer having a long-chain alkyl group (b), the macromer (c) and the monomer having a polyoxyalkylene group (d). The water-based ink can be suitably used, for instance, as a water-based ink for inkjet recording and the like.Type: ApplicationFiled: December 22, 2003Publication date: July 8, 2004Applicant: Kao CorporationInventors: Makoto Sakakibara, Nobushige Tanaka, Ryuma Mizushima, Kenji Kaida, Takehiro Tsutsumi
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Patent number: 6730780Abstract: An oil-soluble dye prepared by subjecting a water-soluble dye having at least one group selected from the group consisting of sulfonate group and carboxyl group in its molecule to amidation: a water-based ink comprising the oil-soluble dye: and a process for preparing an oil-soluble dye, comprising halogenating a water-soluble dye having at least one group selected from the group consisting of sulfonate group and carboxyl group in its molecule, and thereafter subjecting the resulting halogenated water-soluble dye to amidation. The Oil-soluble dye of the present invention can be suitably and favorably used for inks for inkjet recording, inks for ball-points pens, inks for markers, toners, paints such as lacquers, inks for felt pens, and the like.Type: GrantFiled: October 19, 2001Date of Patent: May 4, 2004Assignee: Kao CorporationInventors: Shigemi Wakabayashi, Takehiro Tsutsumi, Kenji Kaida, Makoto Sakakibara
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Publication number: 20040030002Abstract: An aqueous dispersion comprising water-insoluble vinyl polymer particles containing C. I. Pigment Blue 15:4 as a colorant; and a water-based ink containing the aqueous dispersion. The water-based ink containing the aqueous dispersion can be suitably used as a water-based ink for inkjet recording and the like.Type: ApplicationFiled: August 5, 2003Publication date: February 12, 2004Applicant: Kao CorporationInventors: Isao Tsuru, Kenji Kaida
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Publication number: 20030019392Abstract: An oil-soluble dye prepared by subjecting a water-soluble dye having at least one group selected from the group consisting of sulfonate group and carboxyl group in its molecule to amidation; a water-based ink comprising the oil-soluble dye; and a process for preparing an oil-soluble dye, comprising halogenating a water-soluble dye having at least one group selected from the group consisting of sulfonate group and carboxyl group in its molecule, and thereafter subjecting the resulting halogenated water-soluble dye to amidation. The Oil-soluble dye of the present invention can be suitably and favorably used for inks for inkjet recording, inks for ball-points pens, inks for markets, toners, paints such as lacquers, inks for felt pens, and the like.Type: ApplicationFiled: October 19, 2001Publication date: January 30, 2003Inventors: Shigemi Wakabayashi, Takehiro Tsutsumi, Kenji Kaida, Makoto Sakakibata
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Patent number: 6031019Abstract: Aqueous ink for ink-jet printing comprises an emulsion of fine polymer particles and contains at least one compound selected from an amino acid or a salt thereof and the like.Type: GrantFiled: February 4, 1998Date of Patent: February 29, 2000Assignee: Kao CorporationInventors: Takehiro Tsutsumi, Koji Azuma, Michitaka Sawada, Tadashi Sakuma, Kenji Kaida, Shigemi Wakabayashi, Tetsuya Ueno, Kuniyasu Kawabe
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Patent number: 5736606Abstract: An aqueous pigment ink is provided made of a pigment, a dispersant, water, and a water-soluble solvent, wherein the dispersant contains a copolymer of a monomer (a) represented by formula (A), and one or more monomers (b) selected from the group consisting of compounds represented by formulae (B) and (C): ##STR1## Wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, AO, m.sub.1, m.sub.2, n, M.sub.1, M.sub.2 and Y are as defined herein that gives improved jettability, storage stability and printing characteristics.Type: GrantFiled: December 30, 1996Date of Patent: April 7, 1998Assignee: Kao CorporationInventors: Hideki Yanagi, Shigemi Wakabayashi, Kenji Kaida
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Patent number: 5372179Abstract: A mold comprising a cavity for defining the shape of a casting and a mold body for forming said cavity, comprising: a mold body formed of an ordinary temperature setting resin or thermosetting resin and casting sand, said mold body having a surface layer portion on the surfaces thereof including depressions, said depressions in the surface layer portion being filled up with at least one porous powdered material selected from the group consisting of hydrous magnesium silicate clay mineral, activated carbon and activated alumina, thereby providing the mold body with smooth surfaces whereby said mold generates less amount of material such as gums which cause defective castings during casting since molten metal is restrained from intruding into the walls of said mold.Type: GrantFiled: October 22, 1993Date of Patent: December 13, 1994Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki KaishaInventors: Yuji Sakakibara, Takatoshi Suzuki, Hiroaki Hayashi, Yasuo Takada, Akihiko Suda, Yoshiro Hayashi, Kenji Kaida, Ryuuichi Masuda, Masahiro Taguchi
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Patent number: 4934440Abstract: A mold surface treatment process comprises: providing a fluidized bed of a treating powder; holding the mold in the fluidized bed to fill up the depressions of the mold surfaces with the treating powder by employing a surface treating member for pushing the treating powder into the depressions; and taking the mold out of the fluidized bed. The mold surface treatment allows to make molten metal less likely penetrate into the walls of mold, and to manufacture a mold which generates less amount of gum causing defects during casting.Type: GrantFiled: September 1, 1988Date of Patent: June 19, 1990Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki KaishaInventors: Yuji Sakakibara, Takatoshi Suzuki, Hiroaki Hayashi, Yasuo Takada, Akihiko Suda, Yoshiro Hayashi, Kenji Kaida, Ryuuichi Masuda, Masahiro Taguchi