Patents by Inventor Osamu Numata

Osamu Numata 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: 11181838
    Abstract: The present invention aims to provide an electrophotographic photoreceptor excellent in abrasion resistance and electrical properties, which uses polymers excellent in surface-active functions such as fluororesin dispersibility and electrical properties, and relates to an electrophotographic photoreceptor which contains a polymer containing a repeating unit represented by the following Formula (A1), provided that the definitions of X1, X2, R11 to R16 in Formula (A1), and R21 in Formula (A2) are shown in the specification
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: November 23, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Atsushi Yoshizawa, Hiroyuki Fukuoka, Osamu Numata
  • Publication number: 20210319927
    Abstract: The present invention relates to a conductor having a substrate and a conductive coating film laminated on the substrate, wherein, the surface resistance value of the conductive coating film is 5×1010?/? or less, the Ra1 of the conductive coating film is 0.7 nm or less, the Ra2 value of the conductive coating film scanning probe microscopies 0.35 nm or less, and the conductive coating film is formed with a conductive composition containing a conductive polymer (A). In addition, the present invention relates to a conductive composition which contains a conductive polymer (A) and a surfactant (B), wherein the surfactant (B) contains a specific water-soluble polymer (C), and the content of a compound (D1) with an octanol-water partition coefficient (Log Pow) of 4 or more in the conductive composition is 0.001 mass % or less, relative to the total mass of the conductive composition.
    Type: Application
    Filed: June 23, 2021
    Publication date: October 14, 2021
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroya FUKUDA, Osamu Numata, Hironobu Ikeda, Toshio Nagasaka, Shinji Saiki, Hiroaki Iriyama, Masashi Uzawa, Asako Kaneko
  • Patent number: 11145432
    Abstract: The present invention relates to a conductor having a substrate and a conductive coating film laminated on the substrate, wherein, the surface resistance value of the conductive coating film is 5×1010?/? or less, the Ra1 of the conductive coating film is 0.7 nm or less, the Ra2 value of the conductive coating film scanning probe microscopies 0.35 nm or less, and the conductive coating film is formed with a conductive composition containing a conductive polymer (A). In addition, the present invention relates to a conductive composition which contains a conductive polymer (A) and a surfactant (B), wherein the surfactant (B) contains a specific water-soluble polymer (C), and the content of a compound (D1) with an octanol-water partition coefficient (Log Pow) of 4 or more in the conductive composition is 0.001 mass % or less, relative to the total mass of the conductive composition.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: October 12, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hiroya Fukuda, Osamu Numata, Hironobu Ikeda, Toshio Nagasaka, Shinji Saiki, Hiroaki Iriyama, Masashi Uzawa, Asako Kaneko
  • Publication number: 20200004169
    Abstract: The present invention aims to provide an electrophotographic photoreceptor excellent in abrasion resistance and electrical properties, which uses polymers excellent in surface-active functions such as fluororesin dispersibility and electrical properties, and relates to an electrophotographic photoreceptor which contains a polymer containing a repeating unit represented by the following Formula (A1), provided that the definitions of X1, X2, R11 to R16 in Formula (A1), and R21 in Formula (A2) are shown in the specification
    Type: Application
    Filed: September 13, 2019
    Publication date: January 2, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Atsushi Yoshizawa, Hiroyuki Fukuoka, Osamu Numata
  • Patent number: 10096395
    Abstract: The present invention relates to a conductor having a substrate and a conductive coating film laminated on the substrate, wherein, the surface resistance value of the conductive coating film is 5×1010?/? or less, the Ra1 of the conductive coating film is 0.7 nm or less, the Ra2 value of the conductive coating film scanning probe microscopies 0.35 nm or less, and the conductive coating film is formed with a conductive composition containing a conductive polymer (A). In addition, the present invention relates to a conductive composition which contains a conductive polymer (A) and a surfactant (B), wherein the surfactant (B) contains a specific water-soluble polymer (C), and the content of a compound (D1) with an octanol-water partition coefficient (Log Pow) of 4 or more in the conductive composition is 0.001 mass % or less, relative to the total mass of the conductive composition.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: October 9, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Hiroya Fukuda, Osamu Numata, Hironobu Ikeda, Toshio Nagasaka, Shinji Saiki, Hiroaki Iriyama, Masashi Uzawa, Asako Kaneko
  • Publication number: 20180174698
    Abstract: The present invention relates to a conductor having a substrate and a conductive coating film laminated on the substrate, wherein, the surface resistance value of the conductive coating film is 5×1010?/? or less, the Ra1 of the conductive coating film is 0.7 nm or less, the Ra2 value of the conductive coating film scanning probe microscopies 0.35 nm or less, and the conductive coating film is formed with a conductive composition containing a conductive polymer (A). In addition, the present invention relates to a conductive composition which contains a conductive polymer (A) and a surfactant (B), wherein the surfactant (B) contains a specific water-soluble polymer (C), and the content of a compound (D1) with an octanol-water partition coefficient (Log Pow) of 4 or more in the conductive composition is 0.001 mass % or less, relative to the total mass of the conductive composition.
    Type: Application
    Filed: February 20, 2018
    Publication date: June 21, 2018
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroya FUKUDA, Osamu NUMATA, Hironobu IKEDA, Toshio NAGASAKA, Shinji SAIKI, Hiroaki IRIYAMA, Masashi UZAWA, Asako KANEKO
  • Publication number: 20150132537
    Abstract: The present invention relates to a conductor having a substrate and a conductive coating film laminated on the substrate, wherein, the surface resistance value of the conductive coating film is 5×1010?/? or less, the Ra1 of the conductive coating film is 0.7 nm or less, the Ra2 value of the conductive coating film scanning probe microscopies 0.35 nm or less, and the conductive coating film is formed with a conductive composition containing a conductive polymer (A). In addition, the present invention relates to a conductive composition which contains a conductive polymer (A) and a surfactant (B), wherein the surfactant (B) contains a specific water-soluble polymer (C), and the content of a compound (D1) with an octanol-water partition coefficient (Log Pow) of 4 or more in the conductive composition is 0.001 mass % or less, relative to the total mass of the conductive composition.
    Type: Application
    Filed: July 24, 2013
    Publication date: May 14, 2015
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Hiroya Fukuda, Osamu Numata, Hironobu Ikeda, Toshio Nagasaka, Shinji Saiki, Hiroaki Iriyama, Masashi Uzawa, Asako Kaneko
  • Publication number: 20100079701
    Abstract: In a prism sheet (4), a plurality of prism rows (411) are formed in parallel on a first surface of a sheet-like translucent base material (43), and a light diffusion layer (45) containing light diffusing materials (452, 454) in a translucent resin (451) is formed on a second surface. The ratio of internal haze to the total haze of the light diffusion layer (45) is 20-90%, and a content rate of the light diffusion material having a particle diameter of 1-4 ?m to the total quantity of the light diffusion materials (452, 454) is 50 vol % or more.
    Type: Application
    Filed: December 7, 2007
    Publication date: April 1, 2010
    Inventors: Yoshiaki Murayama, Osamu Numata
  • Publication number: 20090047368
    Abstract: [Problem] To provide a new pharmacological action for high-molecular-weight polyphenols [Solution] To provide high-molecular-weight polyphenols extracted from fermented tea (e.g. oolong tea or black tea), which are high-molecular-weight polyphenols with a number average molecular weight ranging from 9,000 to 18,000, and containing in their partial structures a procyanidin structure of polymerized catechins and/or their gallates, and a structure of linkage between the B-rings of catechins and/or their gallates. These high-molecular-weight polyphenols have the functions of mitochondrial activation, suppression of increase in blood glucose, and suppression of weight gain. Therefore, they can be used as drugs for the treatment of mitochondrial disease, and also as drugs for the prevention and treatment of diabetes. They may also be added to health foods and beverages.
    Type: Application
    Filed: November 4, 2005
    Publication date: February 19, 2009
    Applicant: University Of Tsukuba
    Inventors: Osamu Numata, Takashi Fujiwara, Kazuaki Hosoda, Tetsuo Ozawa
  • Patent number: 5251074
    Abstract: During the playback operation for freezing and storing a specific frame of a picture in a memory and thereafter printing the frame, the recording medium is turned reversely for a prescribed amount according to an instruction from a printer in response to the entry of the freeze command in order to accurately search the frame at the entry of the freeze, and thereafter the recording medium is played back in normal mode. The amounts of reverse turn and the successive forward turn in normal playback are counted and compared, and when the difference has become a prescribed value, a freeze signal is produced and the frame of the picture selected by the freeze command is stored in the memory and printed when required. This control method for use in a video print system is designed so that the recording medium is turned reversely for a prescribed amount according to an instruction from the printer and then stopped until the next command is entered.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: October 5, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Kentaro Hamma, Yasunori Kobori, Hiroyuki Kimura, Yoshinori Okada, Shoji Ohno, Osamu Numata, Kotaro Kawamura, Hideo Nishijima, Naohiro Ozawa
  • Patent number: 4777655
    Abstract: A necessary signal portion of a control signal transmitted from a land station of a mobile telecommunication system during an idle period thereof is received intermittently by a mobile station, with an initial unstable operation period of the mobile station occurring in a period of an unnecessary signal portion of the control signal and a subsequent stable operation period thereof occurring in a period of the necessary signal portion of the control signal.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: October 11, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Osamu Numata, Yoshitomo Kuwamoto, Hiroshi Shirai, Shinichi Hagiya