Patents by Inventor Yuji Iwashita

Yuji Iwashita 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: 11312880
    Abstract: The present invention aims to provide a copolymerized polyester which is effective as a binder ingredient for aqueous paint, and a copolymerized polyester aqueous dispersion.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: April 26, 2022
    Assignee: TOYOBO CO., LTD.
    Inventors: Yuji Iwashita, Tadahiko Mikami
  • Publication number: 20210371581
    Abstract: The present invention aims to provide a copolymerized polyester and a resin composition which are excellent in storage stability, water-resistant adhesion, processability, weathering resistance and leveling property. According to the present invention, there is provided a copolymerized polyester containing a polyvalent carboxylic acid component and a polyhydric alcohol component as copolymerization components, wherein, when a content of the polyvalent carboxylic acid component is taken as 100% by mole, a content of an alicyclic polyvalent carboxylic acid component is 50% by mole or more, and wherein the copolymerized polyester has an acid value of 170 to 1000 equivalents/106 g.
    Type: Application
    Filed: December 18, 2019
    Publication date: December 2, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Koichi SAKAMOTO, Tadahiko MIKAMI, Yuji IWASHITA, Katsuya SHIMENO
  • Publication number: 20200317954
    Abstract: The present invention aims to provide a copolymerized polyester which is effective as a binder ingredient for aqueous paint, and a copolymerized polyester aqueous dispersion.
    Type: Application
    Filed: April 10, 2019
    Publication date: October 8, 2020
    Applicant: TOYOBO CO., LTD.
    Inventors: Yuji IWASHITA, Tadahiko MIKAMI
  • Patent number: 5989622
    Abstract: The method is related to intermittent coating capable of distinctly defining a boundary between a coated region and an uncoated region on a web, to thereby intermittently form a coated film on the web with increased accuracy and efficiency. A coating liquid feed pump is arranged so as to alternately communicate with a circulation line and a pocket of an extrusion type coater through a directional control valve, resulting in coating liquid being intermittently fed to the pocket and then forced out of a slit, so that coated regions and uncoated regions may be alternately formed on a conductive sheet material. During interruption of communication between the pocket and the feed pump, the pocket is permitted to communicate via a discharge pipe and a shut-off valve with a sub-tank to reduce a pressure of coating liquid in the pocket, to thereby prevent undesired feeding of coating liquid to the uncoated region beyond an end position of the coated region.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: November 23, 1999
    Assignee: TDK Corporation
    Inventors: Yuji Iwashita, Seiichi Endo, Keiichi Morimoto
  • Patent number: 5066590
    Abstract: Superoxide dismutase is chemically modified with poly(alkylene oxide), the modified superoxide dismutase having a molecular structure in which both ends of a poly(alkylene oxide) molecule are attached to superoxide dismutase. The modified superoxide dismutase can be used to remove toxic substances derived from oxygen, from the blood circulation in a living body, and has a longer half life in the blood circulation as compared to superoxide dismutase which has not been modified.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: November 19, 1991
    Assignee: Ajinomoto Co., Inc.
    Inventors: Akira Yabuki, Yuji Iwashita
  • Patent number: 4670417
    Abstract: There is disclosed hemoglobin modified in that a poly(alkylene oxide) is bonded thereto by a bond between a terminal group of said poly(alkylene oxide) and an amino group of said hemoglobin, said bond having the structure:--CH.sub.2 --O--(CH.sub.2)--CONH--Hbwherein Hb represents said hemoglobin and n represents a positive integer, preferably 1 to 7. The modified hemoglobin is an effective oxygen carrier and can therefore be used as a blood substitute.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: June 2, 1987
    Assignee: Ajinomoto Co., Inc.
    Inventors: Keiji Iwasaki, Yuji Iwashita, Taketoshi Okami
  • Patent number: 4412989
    Abstract: An oxygen carrying material containing hemoglobin or a hemoglobin derivative covalently coupled through an amide bond to a polymer selected from the group consisting of polyethylene glycol, polypropylene glycol, and copolymers of ethylene oxide and propylene oxide.
    Type: Grant
    Filed: June 3, 1982
    Date of Patent: November 1, 1983
    Assignee: Ajinomoto Company Incorporated
    Inventors: Yuji Iwashita, Katsumi Ajisaka, Keiji Iwasaki
  • Patent number: 4377512
    Abstract: A hemoglobin modified by covalently bound inulin.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: March 22, 1983
    Assignee: Ajinomoto Co., Inc.
    Inventors: Katsumi Ajisaka, Yuji Iwashita
  • Patent number: 4301144
    Abstract: A novel modified hemoglobin was prepared. The hemoglobin is coupled with a polyalkylene glycol or its derivative, and the products are useful as a blood substitute. The oxygen-carrying capacity of this hemoglobin is nearly equal to that of a native hemoglobin, and the residence time in the circulation is satisfactorily long.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: November 17, 1981
    Assignee: Ajinomoto Company, Incorporated
    Inventors: Yuji Iwashita, Katsumi Ajisaka