Patents by Inventor Dai Ikemizu

Dai Ikemizu 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).

  • Thermal transfer recording material and thermal transfer recording method
    Patent number: 7425523
    Abstract: A thermal transfer recording material contains at least one colorant represented by the following general formula (II), wherein R21 and R22 each represent a substituted or unsubstituted aliphatic group; R23 represents a substituent; n represents an integer of 0 to 4; when n is 2 or more, R23 is the same or different each other; R25 and R26 represent alkyl groups respectively; and at least one of R25 and R26 represents a secondary alkyl group.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: September 16, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Dai Ikemizu, Emiko Kataoka, Takatugu Suzuki, Kazuya Yoshida, Hiroyuki Yamashita
  • Organic electroluminescent element, white light emission element, full color display device and lighting device
    Publication number: 20070196691
    Abstract: An organic electroluminescent element comprising a metal complex represented by Formula (1), wherein Z is a hydrocarbon ring or a heterocyclic ring, provided that each of the hydrocarbon ring and the heterocyclic ring has a substituent having a steric parameter (Es) of ?0.5 or less at the third atom of the ring counted from a nitrogen atom attached to Z, the nitrogen atom being counted as the first atom, X, Y, A, B, X1-L1-X2, M1, m1 and m2 are described in the specification.
    Type: Application
    Filed: February 16, 2007
    Publication date: August 23, 2007
    Inventors: Dai Ikemizu, Hiroshi Kita, Masato Nishizeki, Eisaku Katoh, Tomohiro Oshiyama
  • Organic electroluminescent element material, organic electroluminescent element, display device and lighting device
    Publication number: 20070196690
    Abstract: An organic electroluminescent element material represented by Formula (1), Formula (1): wherein Z is a heterocylcic ring comprising a substituent having a steric parameter value (Es) of ?0.5 or less at the third atom of the ring counted from a nitrogen atom attached to Z, the nitrogen atom being counted as the first atom; and other symbols in Formula (1) are described in the specification.
    Type: Application
    Filed: February 15, 2007
    Publication date: August 23, 2007
    Inventors: Dai Ikemizu, Hiroshi Kita, Masato Nishizeki, Eisaku Katoh, Tomohiro Oshiyama
  • Azomethine dye and metal complex dye, as well as color toner and ink-jet ink using the same
    Patent number: 7205406
    Abstract: An azomethine dye represented by the following Formula 1: wherein Y represents a substituent of 0.2??p?0.9, Z1 and Z2 each represent —CR1?, where R1 represents a hydrogen atom or a substituent, or —N?, L represents the group represented by the following Formula 1a, X represents an unsubstituted or substituted di-alkylamino group, R represents an unsubstituted or substituted alkyl group, and n represents an integer more than 0. wherein B represents a group of non-metallic atoms which are necessary to form a heterocyclic ring.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: April 17, 2007
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Emiko Kataoka, Takatugu Suzuki, Dai Ikemizu
  • Azomethine dye and metal complex dye, as well as color toner and ink-jet ink using the same
    Publication number: 20060073403
    Abstract: An azomethine dye represented by the following Formula 1: wherein Y represents a substituent of 0.2??p?0.9, Z1 and Z2 each represent —CR1?, where R1 represents a hydrogen atom or a substituent, or —N?, L represents the group represented by the following Formula 1a, X represents an unsubstituted or substituted di-alkylamino group, R represents an unsubstituted or substituted alkyl group, and n represents an integer more than 0. wherein B represents a group of non-metallic atoms which are necessary to form a heterocyclic ring.
    Type: Application
    Filed: July 1, 2005
    Publication date: April 6, 2006
    Inventors: Emiko Kataoka, Takatugu Suzuki, Dai Ikemizu
  • Thermal transfer recording material and thermal transfer recording method
    Publication number: 20060003892
    Abstract: A thermal transfer recording material contains at least one colorant represented by the following general formula (II), wherein R21 and R22 each represent a substituted or unsubstituted aliphatic group; R23 represents a substituent; n represents an integer of 0 to 4; when n is 2 or more, R23 is the same or different each other; R25 and R26 represent alkyl groups respectively; and at least one of R25 and R26 represents a secondary alkyl group.
    Type: Application
    Filed: July 1, 2005
    Publication date: January 5, 2006
    Inventors: Dai Ikemizu, Emiko Kataoka, Takatugu Suzuki, Kazuya Yoshida, Hiroyuki Yamashita
  • Thermal transfer recording material, thermal transfer image receptive sheet, ink sheet, thermal transfer recording method, and metal containing compound
    Publication number: 20050192181
    Abstract: A thermal transfer recording material including a support having thereon a metal containing compound derived from a divalent metal salt and a compound represented by Formula (I), the metal containing compound having a property to form a metal-chelated dye by heating with a metal chelating dyes represented by Formulas (1), (2) or (4).
    Type: Application
    Filed: February 17, 2005
    Publication date: September 1, 2005
    Applicant: KONICA MINOLTA PHOTO IMAGING, INC.
    Inventors: Dai Ikemizu, Satoru Ikesu, Takatugu Suzuki
  • Thermal transfer recording material and thermal transfer recording method
    Patent number: 6713432
    Abstract: A thermal transfer recording material comprising a support having thereon an image transferring layer containing a coloring material represented by Formula (I), Formula (I): wherein each R11 and R12 is independently a substituted or unsubstituted aliphatic group; R13 is a substituent and n is an integer of 0 to 4, provided that when n is 2 or more, a plurality of R13s are the same or different; R14 is an alkyl group; and each R15 and R16 is independently an alkyl group having 3 to 8 carbon atoms.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: March 30, 2004
    Assignee: Konica Corporation
    Inventors: Dai Ikemizu, Mitsuhiro Fukuda, Motoaki Sugino, Norio Miura
  • Thermal transfer recording material and thermal transfer recording method
    Publication number: 20020151437
    Abstract: A thermal transfer recording material comprising a support having thereon an image transferring layer containing a coloring material represented by Formula (I), Formula (I): 1
    Type: Application
    Filed: January 28, 2002
    Publication date: October 17, 2002
    Inventors: Dai Ikemizu, Mitsuhiro Fukuda, Motoaki Sugino, Norio Miura
  • Silver halide light-sensitive material containing a specific dye
    Patent number: 6444415
    Abstract: A thermally developable silver halide photographic light-sensitive material having a dye represented by formula (8), wherein X1 and X2 each represents an oxygen atom, a sulfur atom, a selenium atom, or a tellurium atom; R5 and R6 each represents a hydrogen atom or an alkyl group; R7 and R8 each represents a monovalent substituents, and plural R7 and plural R8 may form a ring structure with each other; m and n each represents an integer of 0 to 4.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: September 3, 2002
    Assignee: Konica Corporation
    Inventors: Shinri Tanaka, Dai Ikemizu
  • Silver halide light-sensitive material containing a specific dye
    Publication number: 20020110767
    Abstract: 1.
    Type: Application
    Filed: September 27, 2001
    Publication date: August 15, 2002
    Inventors: Shinri Tanaka, Dai Ikemizu
  • Silver halide light-sensitive material containing a specific dye
    Patent number: 6342340
    Abstract: A silver halide photographic light-sensitive material comprising a dye represented by the following formula (1) or formula (2): wherein A1 and B1 each represent substituents other than a naphthalene group; and A2 and B2 represent substituents.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: January 29, 2002
    Assignee: Konica Corporation
    Inventors: Shinri Tanaka, Dai Ikemizu