Patents by Inventor Masumi Okita

Masumi Okita 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).

  • Process for preparing an alkylcyclohexanol alkyleneoxide adduct
    Publication number: 20030009061
    Abstract: The invention is a preparation process of alkylcyclohexanol alkylene oxide adduct which contains almost no alkylphenol alkylene oxide adduct 1) in the absence of a solvent, 2) in the presence of a saturated hydrocarbon solvent, or 3) in the presence of water.
    Type: Application
    Filed: May 31, 2002
    Publication date: January 9, 2003
    Inventors: Yoshihisa Inoue, Hiroyoshi Watanabe, Yasuko Ono, Masumi Okita
  • Process for preparing an alkylcyclohexanol alkylene oxide adduct
    Patent number: 6437194
    Abstract: The invention is a preparation process of alkylcyclohexanol alkylene oxide adduct which contains almost no alkylphenol alkylene oxide adduct 1) in the absence of a solvent, 2) in the presence of a saturated hydrocarbon solvent, or 3) in the presence of water. The invention can prepare alkylcyclohexanol alkylene oxide having a 200 ppm or less content of alkylphenol and alkylphenol alkylene oxide adduct. The alkylcyclohexanol alkylene oxide adduct obtained in the process of the invention has less ultraviolet absorption and fluorescence due to alkylphenol alkylene oxide adduct and is thus useful for spectrometric analysis of protein and further has excellent properties in the field of detergent and other common uses of surface active agents.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: August 20, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Yoshihisa Inoue, Hiroyoshi Watanabe, Yasuko Ono, Masumi Okita, Daisuke Fukuoka, Yoshio Motoyama, Kenji Shimamoto
  • Hydrogenated ring-opening metathesis polymer and its use and production
    Patent number: 6372854
    Abstract: The present invention discloses a hydrogenated ring-opening metathesis polymer comprising at least unit (A) of formula (1), unit (B) of formula (2) and unit (c) of formula (3): wherein a constituent molar ratio of the structural unit (A)/(B) is from 1/99 to 99/1 and a constituent molar ratio of the structural unit (B)/(C) is from 30/70 to 100/0 and, furthermore, a ratio of a weight-average molecular weight Mw to a number-average molecular weight Mn, that is Mw/Mn is from 1.0 to 2.0.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: April 16, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Tadahiro Sunaga, Toshiro Takao, Keiichi Ikeda, Yoshihiro Yamamoto, Nobuo Kawahara, Masumi Okita
  • PROCESS FOR PREPARING AN ALKYLCYCLOHEXANOL ALKYLENE OXIDE ADDUCT
    Publication number: 20010051752
    Abstract: The invention is a preparation process of alkylcyclohexanol alkylene oxide adduct which contains almost no alkylphenol alkylene oxide adduct 1) in the absence of a solvent, 2) in the presence of a saturated hydrocarbon solvent, or 3) in the presence of water.
    Type: Application
    Filed: March 16, 1999
    Publication date: December 13, 2001
    Inventors: YOSHIHISA INOUE, HIROYOSHI WATANABE, YASUKO ONO, MASUMI OKITA, DAISUKE FUKUOKA, YOSHIO MOTOYAMA, KENJI SHIMAMOTO
  • Preparation of hydrogenated product of cyclic olefin ring-opening metathesis polymer
    Patent number: 6197894
    Abstract: An olefin ring-opening metathesis polymer is hydrogenated to obtain a hydrogenated product thereof in high yield.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: March 6, 2001
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Tadahiro Sunaga, Masumi Okita, Tadashi Asanuma