Patents by Inventor Yutaka Osajima

Yutaka Osajima 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: 6821481
    Abstract: A continuous processing apparatus includes a dissolution section for dissolving liquid carbon dioxide into a continuously supplied liquid-form raw material, and a processing section for holding the liquid-form raw material with liquid carbon dioxide dissolved therein under predetermined temperature and pressure to thereby transform carbon dioxide into a supercritical or subcritical state. Thus, bacteria, enzyme and the like contained in the liquid-form raw material can be effectively killed or decreased.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: November 23, 2004
    Assignee: Shimadzu Corporation
    Inventors: Yutaka Osajima, Mitsuya Shimoda, Masaki Miyake
  • Patent number: 6616849
    Abstract: The present invention proposes a method of and system for continuously processing liquid material by which enzymes in the liquid material are inactivated and the liquid material is sterilized effectively. In one example of the system according to the present invention, a liquid material is introduced into a processing chamber 11 from an introduction port at the bottom, and liquefied carbon dioxide formed into micro-particles by a filter 16 is also introduced in the chamber 11. The micro-particles of liquefied carbon dioxide dissolves into the liquid material efficiently. The liquid material taken out from a take-out port 18 is introduced into a warming pipe 20 kept at such a preset temperature and pressure where the carbon dioxide turns to a supercritical fluid. After that, the liquid material is introduced through a pressure control valve 24 into a pressure-reducing chamber 24. The carbon dioxide rapidly changes from supercritical fluid to gas, and vaporizes from the liquid material.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: September 9, 2003
    Assignee: Shimadzu Corporation
    Inventors: Yutaka Osajima, Mitsuya Shimoda, Michinosuke Takada, Masaki Miyake
  • Patent number: 5869123
    Abstract: A method of continuously de-activating enzymes, sterilizing or deodorizing a liquid material such as liquid foodstuff or liquid medicine with a supercritical fluid of carbon dioxide. The method includes the following steps: 1) the liquid material is continuously supplied from an inlet at a bottom of a processing tank; 2) micro-particles of the supercritical fluid of the carbon dioxide are formed so that a density of the supercritical fluid is smaller than that of the liquid material; 3) the micro-particles of the supercritical fluid are injected continuously into the liquid material from another inlet at the bottom of the processing tank; and 4) the liquid material and the supercritical fluid are separated into different phases at the top of the processing tank and are taken out of the processing tank separately.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: February 9, 1999
    Assignees: Shimadzu Corporation, Nippon Tansan Company, Limited
    Inventors: Yutaka Osajima, Mituya Shimoda, Tamotu Kawano, Kunihiko Okubo
  • Patent number: 5704276
    Abstract: A system for continuously de-activating enzymes, sterilizing or deodorizing a liquid material such as liquid foodstuff or liquid medicine with a supercritical fluid of carbon dioxide. The system includes the following 1) a liquid material is continuously supplied from an inlet at a bottom of a processing tank; 2) micro-particles of the supercritical fluid of the carbon dioxide are formed so that a density of the supercritical fluid is smaller than that of the liquid material; 3) the micro-particles of the supercritical fluid are injected continuously into the liquid material from another inlet at the bottom of the processing tank; and 4) the liquid material and the supercritical fluid are separated into different phases at the top of the processing tank and are taken out of the processing tank separately.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: January 6, 1998
    Assignees: Shimadzu Corporation, Nippon Tansan Company, Limited
    Inventors: Yutaka Osajima, Mituya Shimoda, Tamotu Kawano, Kunihiko Okubo
  • Patent number: 5667835
    Abstract: A method for (1) inactivating enzymes, microorganisms and spores in a liquid foodstuff, and (2) sterilizing microorganisms, spores and virus in a liquid foodstuff, comprises contacting the liquid foodstuff to be treated with carbon dioxide of a supercritical state supplied through a filter with a mesh size of not more than 120 .mu.m in average diameter (average size) in a treating tank.
    Type: Grant
    Filed: February 27, 1996
    Date of Patent: September 16, 1997
    Assignee: Nippan Tansan Co., Ltd.
    Inventors: Yutaka Osajima, Mitsuya Shimoda, Tamotsu Kawano
  • Patent number: 5520943
    Abstract: The quality of a liquid foodstuff is modified by contacting it with micron-size carbon dioxide particles in a supercritical state. These particles are generated by supplying supercritical carbon dioxide through a filter with a mesh size of not more than 100 .mu.m in average diameter. The liquid foodstuff was processed and contacted with carbon dioxide particles in a treating tank.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: May 28, 1996
    Assignee: Nippon Tansan Co., Ltd.
    Inventors: Yutaka Osajima, Mitsuya Shimoda, Tamotsu Kawano
  • Patent number: 4943552
    Abstract: A novel process for preparing a gas absorbent, comprising the steps of adding sodium bromate to a mixture of sulfuric acid aqueous solution and active carbon, reacting them, separating solids from the reaction mixture, and drying said solids. The gas absorbent can be utilized as a reagent for preserving the freshness (inhibiting agent) of fruits, an inhibitor of flower withering, an inhibitor of bulb germinating and root sprouting, an inhibitor of plant withering, leaf falling or fruit falling, a reagent for controlling the growth and specialization of plants, a deodorant or an absorbent of organic compounds having double bonding or triple bonding.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: July 24, 1990
    Assignee: Honshu Seishi Kabushiki Kaisha
    Inventors: Yutaka Osajima, Katsumi Yamamura, Yoshio Unno