Patents by Inventor Yuka Nakajima

Yuka Nakajima 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).

  • NRF2-ACTIVATING COMPOUND
    Publication number: 20240132519
    Abstract: Compounds represented by formula (I), compounds of the less-polar group of two groups of diastereomers in which the carbon atom indicated by * in formula (II) is an asymmetric carbon atom, salts of the compounds, and solvates of the compounds or salts. The compounds have Nrf2 activating action.
    Type: Application
    Filed: December 28, 2021
    Publication date: April 25, 2024
    Applicant: SENJU PHARMACEUTICAL CO., LTD.
    Inventors: Tomoyo MIYABE, Shinnosuke MACHIDA, Yuka OBA, Masaki KAKEHI, Takashi IMADA, Takeshi NAKAJIMA
  • Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
    Publication number: 20050260511
    Abstract: An electrophotographic photosensitive member, irradiated with semiconductor laser light having a wavelength of 380 to 500 nm, includes a conductive substrate, a charge-generating layer formed thereon; and a charge transport layer formed thereon, the charge transport-layer having a transmittance of at least 30% for the semiconductor laser light. A process cartridge mountable to and detachable from an electrophotographic apparatus includes the electrophotographic photosensitive member. An electrophotographic apparatus also includes the electrophotographic photosensitive member.
    Type: Application
    Filed: May 12, 2005
    Publication date: November 24, 2005
    Inventors: Mitsuhiro Kunieda, Toshihiro Kikuchi, Tetsuro Kanemaru, Yuka Nakajima
  • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    Patent number: 6958204
    Abstract: An electrophotographic photosensitive member includes a charge generating material and a charge transfer material. The charge transfer material contains a triarylamine compound synthesized from an amine compound and an aryl halide in the presence of a catalyst comprising a phosphine compound represented by formula (1) and a palladium compound: wherein Ar1 to Ar3 are each independently an alkyl or aryl group which may have a substituent group, and at least one of Ar1 to Ar3 is an aryl group. A process cartridge includes the electrophotographic photosensitive member.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: October 25, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Tanaka, Mitsuhiro Kunieda, Yuka Nakajima, Harunobu Ohgaki
  • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    Publication number: 20050026059
    Abstract: An electrophotographic photosensitive member includes a charge generating material and a charge transfer material. The charge transfer material contains a triarylamine compound synthesized from an amine compound and an aryl halide in the presence of a catalyst comprising a phosphine compound represented by formula (1) and a palladium compound: wherein Ar1 to Ar3 are each independently an alkyl or aryl group which may have a substituent group, and at least one of Ar1 to Ar3 is an aryl group. A process cartridge includes the electrophotographic photosensitive member.
    Type: Application
    Filed: August 25, 2004
    Publication date: February 3, 2005
    Inventors: Takakazu Tanaka, Mitsuhiro Kunieda, Yuka Nakajima, Harunobu Ohgaki
  • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    Patent number: 6818368
    Abstract: An electrophotographic photosensitive member includes a charge generating material and a charge transfer material. The charge transfer material contains a triarylamine compound synthesized from an amine compound and an aryl halide in the presence of a catalyst comprising a phosphine compound represented by formula (1) and a palladium compound: wherein Ar1 to Ar3 are each independently an alkyl or aryl group which may have a substituent group, and at least one of Ar1 to Ar3 is an aryl group. A process cartridge includes the electrophotographic photosensitive member.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: November 16, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Tanaka, Mitsuhiro Kunieda, Yuka Nakajima, Harunobu Ohgaki
  • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    Patent number: 6410195
    Abstract: An electrophotographic photosensitive member comprising a support and a photosensitive layer provided thereon. The photosensitive layer fulfilling at least one of the following conditions (A) and (B): (A) containing a polymerization product of a monomer having a reactive group represented by the following Formula (1): —O—(—CH2—)n—CH═CH—R0  (1);  and (B) containing a copolymerization product of a monomer having a reactive group represented by the following Formula (2): —O—CH═CH2  (2) with a charge-transporting material having a reactive group capable of reacting with the monomer.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: June 25, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takakazu Tanaka, Yuka Nakajima
  • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    Publication number: 20020048710
    Abstract: An electrophotographic photosensitive member includes a charge generating material and a charge transfer material.
    Type: Application
    Filed: April 12, 2001
    Publication date: April 25, 2002
    Inventors: Takakazu Tanaka, Mitsuhiro Kunieda, Yuka Nakajima, Harunobu Ohgaki