Patents by Inventor Rie Sakuragi

Rie Sakuragi 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).

  • LIGHT-EMITTING COLORANT-CONTAINING PARTICLE, AND LABELING AGENT FOR PATHOLOGICAL DIAGNOSIS
    Publication number: 20220003641
    Abstract: A light-emitting colorant-containing particle contains an organic resin and a light-emitting colorant. A content of the light-emitting colorant is in a range of 10 to 80 mol % based on a total amount of a monomer forming the organic resin and the light-emitting colorant. The particle has an average particle diameter in a range of 1 to 100 nm.
    Type: Application
    Filed: October 9, 2019
    Publication date: January 6, 2022
    Inventors: Rie SAKURAGI, Masaru TAKAHASHI, Shin NAKAYAMA, Shumpei HITOSUGI
  • Electrochromic display element and full-color electrochromic display element
    Patent number: 7619803
    Abstract: An electrochromic display element includes a pair of counter electrodes having therebetween an electrochromic compound represented by Formula (1), wherein the electrochromic compound becomes colored when being oxidized and becomes colorless when being reduced by a driving operation of the electrodes: wherein R1 represents a substituted or unsubstituted aryl group; and R2 and R3 each represent a hydrogen atom or a substituent; X represents >N—R4, an oxygen atom or a sulfur atom; and R4 represents a hydrogen atom or a substituent.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: November 17, 2009
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Noriyuki Kokeguchi, Osamu Ishige, Rie Sakuragi
  • ELECTROCHROMIC DISPLAY ELEMENT AND FULL-COLOR ELECTROCHROMIC DISPLAY ELEMENT
    Publication number: 20090027757
    Abstract: An electrochromic display element includes a pair of counter electrodes having therebetween an electrochromic compound represented by Formula (1), wherein the electrochromic compound becomes colored when being oxidized and becomes colorless when being reduced by a driving operation of the electrodes: wherein R1 represents a substituted or unsubstituted aryl group; and R2 and R3 each represent a hydrogen atom or a substituent; X represents >N—R4, an oxygen atom or a sulfur atom; and R4 represents a hydrogen atom or a substituent.
    Type: Application
    Filed: April 11, 2006
    Publication date: January 29, 2009
    Inventors: Noriyuki Kokeguchi, Osamu Ishige, Rie Sakuragi
  • Copolymer and photothermographic material containing the same
    Patent number: 7455961
    Abstract: Disclosed is a photothermographic material comprising on support a light-insensitive silver salt of an aliphatic carboxylic acid, a light-sensitive silver halide and a reducing agent for silver ions, wherein the photothermographic material further comprises a copolymer comprising a backbone comprising a chain having a monomeric repeating unit, represented by formula (1) and a chain having a monomeric repeating unit, represented by formula (2).
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: November 25, 2008
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Rie Sakuragi, Osamu Ishige, Kiyoshi Fukusaka
  • COPOLYMER AND PHOTOTHERMOGRAPHIC MATERIAL CONTAINING THE SAME
    Publication number: 20080085482
    Abstract: Disclosed is a photothermographic material comprising on support a light-insensitive silver salt of an aliphatic carboxylic acid, a light-sensitive silver halide and a reducing agent for silver ions, wherein the photothermographic material further comprises a copolymer comprising a backbone comprising a chain having a monomeric repeating unit, represented by formula (1) and a chain having a monomeric repeating unit, represented by formula (2).
    Type: Application
    Filed: September 21, 2007
    Publication date: April 10, 2008
    Applicant: KONICA MINOLTA MEDICAL & GRAPHIC, INC.
    Inventors: Rie SAKURAGI, Osamu ISHIGE, Kiyoshi FUKUSAKA
  • Squalirium compound, thermally developable photographic material containing said compound, and image forming method thereof
    Patent number: 7235351
    Abstract: A thermally developable photographic material containing a support, provided thereon: (i) a photosensitive layer containing photosensitive silver halide particles, and (ii) a layer containing at least one represented by formula below on one or both surfaces of the support
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: June 26, 2007
    Inventors: Kiyoshi Fukusaka, Osamu Ishige, Rie Sakuragi
  • Squarylium compound and photothermographic material containing the same
    Patent number: 7138224
    Abstract: A photothermographic material containing a support having on one side of the support a photosensitive layer containing: photosensitive silver halide grains; and a compound represented by Formula (1) or Formula (2): wherein the symbols in Formulas (1) and (2) are indicated in the specification.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: November 21, 2006
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Kiyoshi Fukusaka, Osamu Ishige, Rie Sakuragi
  • Squalirium compound, thermally developable photographic material containing said compound, and image forming method thereof
    Publication number: 20060228656
    Abstract: A thermally developable photographic material containing a support, provided thereon: (i) a photosensitive layer containing photosensitive silver halide particles, and (ii) a layer containing at least one represented by formula below on one or both surfaces of the support.
    Type: Application
    Filed: April 3, 2006
    Publication date: October 12, 2006
    Inventors: Kiyoshi Fukusaka, Osamu Ishige, Rie Sakuragi
  • Photothermographic material
    Publication number: 20060166150
    Abstract: A photothermographic materials, containing a support having thereon an image forming layer containing, light photosensitive silver halide grains; a binder; a reducing agent for silver ions represented by Formula (1); and a leuco dye represented by Formula (2):
    Type: Application
    Filed: January 18, 2006
    Publication date: July 27, 2006
    Inventors: Rie Sakuragi, Osamu Ishige, Kiyoshi Fukusaka
  • Squarylium compound and photothermograhic material containing the same
    Publication number: 20060078834
    Abstract: A photothermographic material containing a support having on one side of the support a photosensitive layer containing: photosensitive silver halide grains; and a compound represented by Formula (1) or Formula (2): Formula (1) Formula (2) wherein the symbols in Formulas (1) and (2) are indicated in the specification.
    Type: Application
    Filed: September 29, 2005
    Publication date: April 13, 2006
    Applicant: KONICA MINOLTA MEDICAL & GRAPHIC, INC.
    Inventors: Kiyoshi Fukusaka, Osamu Ishige, Rie Sakuragi
  • Silver halide color photographic material
    Patent number: 6927020
    Abstract: A silver halide color photographic material is disclosed, comprising on a support a silver halide emulsion layer comprising an yellow dye forming coupler represented by formula (I): A—B??formula (I) wherein A is represented by formula (Ia), (Ia?), (Ia?), (Ib), (Ic), (Id), (Id?), (Ie), (Ie?), (Ie?), (If) or (If?); and B is represented by formula (II) described in the specification.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: August 9, 2005
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Rie Sakuragi, Satoru Ikesu, Takatugu Suzuki
  • Silver halide color photographic material
    Publication number: 20040157173
    Abstract: A silver halide color photographic material is disclosed, comprising on a support a silver halide emulsion layer comprising an yellow dye forming coupler represented by formula (I):
    Type: Application
    Filed: February 5, 2004
    Publication date: August 12, 2004
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Rie Sakuragi, Satoru Ikesu, Takatugu Suzuki