Patents by Inventor Yoshibumi Ishii

Yoshibumi Ishii 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: 5583215
    Abstract: The crystalline mixture solid containing maltitol of the present invention has a crushed and relatively tight crystal structure which can be observed at 1,000 magnifications by a scanning electron microscope, an apparent specific gravity in the range of 0.650-0.750, an oil absorptivity of the powdered crystalline mixture solid containing maltitol having a particle size from 50 mesh to 20 mesh in the range of 7.0%-17%, in other words, is relatively heavy in apparent specific gravity and low in oil absorptivity, and the crystalline mixture solid containing maltitol is prepared by continuously supplying an aqueous solution of maltitol to an extruder provided with elongated cooling and kneading zones, cooling and kneading it in the presence of seed crystals to form a maltitol magma, and continuously extruded from a nozzle.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: December 10, 1996
    Assignee: Towa Chemical Industry Co., Ltd.
    Inventors: Shigeru Kawashima, Mitsuo Magara, Yoshibumi Ishii, Kazuaki Kato
  • Patent number: 5462864
    Abstract: This invention allows high-purity maltose to be manufactured both simply and economically by sequentially going through the steps of liquefaction of starch, saccharification of the resulting liquefied substance by combining with general-purpose enzymes and further saccharification with an enzyme which hydrolyzes oligosaccharides of trisaccharide or more, and also allows the economical and favorable manufacturing of maltitol, the reduced product of the above maltose, by going through an additional reduction step.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: October 31, 1995
    Assignee: Towa Chemical Industry Co., Ltd.
    Inventors: Masahiro Niimi, Yukari Hariu, Koichi Kataura, Yoshibumi Ishii, Kazuaki Kato
  • Patent number: 5354856
    Abstract: The crystalline mixture solid containing maltitol of the present invention has a crushed and relatively tight crystal structure which can be observed at 1,000 magnifications by a scanning electron microscope, an apparent specific gravity in the range of 0.650-0.750, an oil absorptivity of the powdered crystalline mixture solid containing maltitol having a particle size from 50 mesh to 20 mesh in the range of 7.0%-17%, in other words, is relatively heavy in apparent specific gravity and low in oil absorptivity, and the crystalline mixture solid containing maltitol is prepared by continuously supplying an aqueous solution of maltitol to an extruder provided with elongated cooling and kneading zones, cooling and kneading it in the presence of seed crystals to form a maltitol magma, and continuously extruded from a nozzle.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: October 11, 1994
    Assignee: Towa Chemical Industry Co., Ltd.
    Inventors: Shigeru Kawashima, Mitsuo Magara, Yoshibumi Ishii, Kazuaki Kato
  • Patent number: 5160546
    Abstract: The present invention is to solve a variety of problems relative to conventional lactitol crystals and relates to a trihydrate crystal of lactitol having a molecular formula C.sub.12 H.sub.24 O.sub.11.3H.sub.2 O and a melting point of 52.degree.-56.degree. C., a crystalline mixture solid containing it and a process for producing them.
    Type: Grant
    Filed: January 2, 1991
    Date of Patent: November 3, 1992
    Assignee: Towa Chemical Industry Co., Ltd.
    Inventors: Shigeru Kawashima, Hiroshi Ide, Kazuaki Kato, Mitsuo Magara, Yoshibumi Ishii
  • Patent number: 5141859
    Abstract: This invention allows high-purity maltose to be manufactured both simply and economically by sequentially going through the steps of liquefaction of starch, saccharification of the resulting liquefied substance by combining with general-purpose enzymes and further saccharification with an enzyme which hydrolyzes oligosaccharides of trisaccharide or more, and also allows the economical and favorable manufacturing of maltitol, the reduced product of the above maltose, by going through an additional reduction step.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: August 25, 1992
    Assignee: Towa Chemical Industry Co., Ltd.
    Inventors: Masahiro Niimi, Yukari Hariu, Koichi Kataura, Yoshibumi Ishii, Kazuaki Kato
  • Patent number: 4999090
    Abstract: A process of preparing industrially trans-1,4-cyclohexanedimethanol of high purity by distilling a mixture of cis- and trans-1,4-cyclohexanedimethanol in the presence of alkali, or by heating a mixture of cis- and trans-1,4-cyclohexanedimethanol in the presence of alkali and then distilling the heated mixture, and a process of preparing powdered trans-1,4-cyclohexanedimethanol by pulverizing the distillate obtained above.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: March 12, 1991
    Assignee: Towa Chemical Industry Co., Ltd.
    Inventors: Yoshiaki Tateno, Susumu Yoneda, Naoki Okamoto, Yoshibumi Ishii, Kazuaki Kato
  • Patent number: 4999058
    Abstract: The present invention is to solve a variety of problems relative to conventional lactitol crystals and relates to a trihydrate crystal of lactitol having a molecular formula C.sub.12 H.sub.24 O.sub.11 .multidot.3H.sub.2 O and a melting point of 52.degree.-56.degree. C., a crystalline mixture solid containing it and a process for producing them.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: March 12, 1991
    Assignee: Towa Chemical Industry Co., Ltd.
    Inventors: Shigeru Kawashima, Hiroshi Ide, Kazuaki Kato, Mitsuo Magara, Yoshibumi Ishii