Patents by Inventor Mamiko Takesue

Mamiko Takesue 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: 9217070
    Abstract: A black colorant mixture comprising a bis-oxodihydro-indolylene-benzodifuranone colorant and a perylene colorant is disclosed which provides high blackness and NIR transparency combined with low conductivity for organic coating films used in display devices. Especially, a black matrix for color filter applications and black column spacers are described used in LCD devices. Further, the black colorant mixture can be used in bezels of a display device equipped with a touch sensor.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: December 22, 2015
    Assignee: BASF SE
    Inventors: Takashi Deno, Mamiko Takesue, Jan Sültemeyer
  • Publication number: 20150183955
    Abstract: A black colorant mixture comprising a bis-oxodihydro-indolylene-benzodifuranone colorant and a perylene colorant is disclosed which provides high blackness and NIR transparency combined with low conductivity for organic coating films used in display devices. Especially, a black matrix for color filter applications and black column spacers are described used in LCD devices. Further, the black colorant mixture can be used in bezels of a display device equipped with a touch sensor.
    Type: Application
    Filed: May 29, 2013
    Publication date: July 2, 2015
    Applicant: BASF SE
    Inventors: Takashi Deno, Mamiko Takesue, Jan Sültemeyer
  • Patent number: 8900779
    Abstract: The invention relates to a color filter composition comprising a) a photoresist binder, b) a transparent pigment, c) optionally a solvent and/or optionally a photoinitiator or a photolatent catalyst, d) a dispersant which is a polymer or copolymer obtainable by a process comprising the steps of a1) polymerizing in a first step one or more ethylenically unsaturated monomers in the presence of at least one nitroxylether having the structural element wherein X represents a group having at least one carbon atom and is such that the free radical X derived from X is capable of initiating polymerization; or a2) polymerizing in a first step one or more ethylenically unsaturated monomers in the presence of at least one stable free nitroxyl radical and a free radical initiator; wherein at least one monomer used in the steps a1) or a2) is a C1-C6 alkyl or hydroxy C1-C6 alkyl ester of acrylic or methacrylic acid; and a second step b) comprising the modification of the polymer or copolymer prepared under a1) or a2) by a t
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: December 2, 2014
    Assignee: Ciba Corporation
    Inventors: Carsten Schellenberg, Clemens Auschra, Masaki Ohwa, Junichi Tanabe, Mamiko Takesue
  • Patent number: 8664324
    Abstract: The present invention pertains to salt modified copolymers wherein one of the monomer units contains a quaternized N-atom structure with a polar substituent. The invention further relates to the use of said copolymers as dispersant especially for color filters.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: March 4, 2014
    Assignee: BASF SE
    Inventors: Junichi Tanabe, Mamiko Takesue
  • Publication number: 20110144260
    Abstract: The present invention pertains to salt modified copolymers wherein one of the monomer units contains a quaternized N-atom structure with a polar substituent. The invention further relates to the use of said copolymers as dispersant especially for color filters.
    Type: Application
    Filed: June 10, 2009
    Publication date: June 16, 2011
    Applicant: BASF SE
    Inventors: Junichi Tanabe, Mamiko Takesue
  • Publication number: 20100092704
    Abstract: A polyester resin aqueous dispersion, comprising: a polyester resin (A) having a number-average molecular weight of 5,000 or more and a glass transition temperature of 50° C. or higher and a polyester resin (B) having a number-average molecular weight of 9,000 or more and a glass transition temperature of 30° C. or lower at a rate (A)/(B) in the range of 80/20 to 20/80 (by mass), giving a resin film superior in adhesive properties, without cracks, and superior in blocking resistance even when formed at low temperature, and superior in bonding properties even when heat-sealed at low temperature, a film obtained by removing an aqueous medium therefrom, and a packaging bag with the film heat-sealed.
    Type: Application
    Filed: September 6, 2006
    Publication date: April 15, 2010
    Inventor: Mamiko Takesue
  • Publication number: 20090186285
    Abstract: The invention relates to a color filter composition comprising a) a photoresist binder, b) a transparent pigment, c) optionally a solvent and/or optionally a photoinitiator or a photolatent catalyst, d) a dispersant which is a polymer or copolymer obtainable by a process comprising the steps of a1) polymerizing in a first step one or more ethylenically unsaturated monomers in the presence of at least one nitroxylether having the structural element wherein X represents a group having at least one carbon atom and is such that the free radical X derived from X is capable of initiating polymerization; or a2) polymerizing in a first step one or more ethylenically unsaturated monomers in the presence of at least one stable free nitroxyl radical and a free radical initiator; wherein at least one monomer used in the steps a1) or a2) is a C1-C6 alkyl or hydroxy C1-C6 alkyl ester of acrylic or methacrylic acid; and a second step b) comprising the modification of the polymer or copolymer prepared under a1) or a2) by a t
    Type: Application
    Filed: July 2, 2007
    Publication date: July 23, 2009
    Inventors: Carsten Schellenberg, Clemens Auschra, Masaki Ohwa, Junichi Tanabe, Mamiko Takesue