Patents by Inventor Akira Haze

Akira Haze 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).

  • Method for producing 5'-nucleotide
    Patent number: 5623069
    Abstract: A method of producing 5'-nucleotide, which comprises maintaining a nucleoside suspension in an organic solvent at a temperature not lower than about 20.degree. C., and then subjecting the resultant suspension to a phosphorylatipon of the nucleoside(s).According to the present invention, 5'-nucleotide can be produced from a nucleoside at high purity and high yield in a shortened reaction time, and impurity removal in the nucleotide purification process is easily accomplished.
    Type: Grant
    Filed: May 10, 1995
    Date of Patent: April 22, 1997
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Akira Haze, Hiroyuki Hatano, Tomomi Ikemoto, Yoshifumi Kitamoto
  • Process for producing purified xanthan gum
    Patent number: 5473062
    Abstract: There is disclosed a process for producing purified xanthan gum, which comprises (i) adding a hydrophilic organic solvent to an aqueous solution containing crude xanthan gum with pH 0.5 to 2.5, and (ii) neutralizing the mixture with a base to precipitate the xanthan gum. The xanthan gum thus obtained has low contents of ash and remaining organic solvent, as well as a high quality with little impurities, and can advantageously be used in the fields of foods, cosmetics, medicaments and the like.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: December 5, 1995
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Akira Haze, Kunihiro Ito, Norio Okutani
  • Segregation reducing agent for hydraulic composition and hydraulic composition
    Patent number: 5376173
    Abstract: A segregation reducing agent for a hydraulic composition which is obtained by adding a water-soluble thickener to a culture of a microorganism capable of producing a .beta.-1,3-glucan selected from the group consisting of curdlan, palamylon and pachyman, in a sufficient amount to give a viscosity to the culture of from about 200 to 2000 cp, followed by spray drying so as to form a powder having a core of the .beta.-1,3-glucan and a coating of the water-soluble thickener.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: December 27, 1994
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Akira Haze, Yoshihisa Yamamoto, Kazuki Miyanagi, Shunsaku Uchida
  • Hydraulic composition, formed products therefrom and segregation reduction agent for hydraulic substances
    Patent number: 5174821
    Abstract: This invention provides a hydraulic composition which contains a cementitious material in powder form, .beta.-1,3-glucan, and a superplasticizer. The composition makes it possible to prepare concrete with high resistance to segregation, high fluidity, and excellent filling ability. Because of this, vibration of the concrete is not necessary during casting; it can simply be poured.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: December 29, 1992
    Assignees: Taisei Corporation, Takeda Chemical Industries, Ltd.
    Inventors: Yasunori Matsuoka, Takefumi Shindoh, Kazunao Yokota, Takafumi Naito, Akira Haze, Kiyoshi Nara