Patents by Inventor Hideki Kobatake

Hideki Kobatake 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 producing dextran reduced in boron content
    Patent number: 6632939
    Abstract: The present invention relates to dextran whose boron content is reduced to a value less than 0.30 &mgr;g/g (dry basis) calculated on the basis of boron atom, a process for producing the same, and dextran with which a container is filled in a solution state. Dextran of the present invention is obtained by treating a boron-containing dextran with a lower alcohol, and said dextran has such a characteristic that deposition is inhibited or the deposition rate is drastically reduced when using it in the form of a solution. Therefore, an isotonic sodium chloride solution of said dextran is suitably used as substitute plasma or external perfusate in an operation.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: October 14, 2003
    Assignees: Meito Sangyo Co., Ltd., Otsuka Pharamaceutical Factory, Inc.
    Inventors: Haruo Machida, Shigeaki Kato, Yuuki Hirata, Mitsuo Aoki, Hideki Kobatake
  • Vitamin d solution holder and containers for transfusions
    Patent number: 6572603
    Abstract: The present invention relates to a polyolefin-made holder for solutions containing vitamin D or derivatives thereof, in which the volume of polyolefin constituting a solution-holding portion of the holder is 30 cm3 or less per &mgr;mol of the vitamin D or derivatives thereof contained therein; and to a transfusion fluid container comprising the vitamin D solution holder. Use of the holder or container can minimize reduction in vitamin D content.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: June 3, 2003
    Assignee: Otsuka Pharmaceutical Factory, Inc.
    Inventors: Seiji Tani, Shigehito Sekimoto, Junji Kaga, Hideki Kobatake
  • DEXTRAN REDUCED IN BORON CONTENT, PROCESS FOR PRODUCING THE SAME, AND DEXTRAN PACKED IS CONTAINER IN SOLUTION STATE
    Publication number: 20030018010
    Abstract: The present invention relates to dextran whose boron content is reduced to a value less than 0.30 &mgr;g/g (dry basis) calculated on the basis of boron atom, a process for producing the same, and dextran with which a container is filled in a solution state. Dextran of the present invention is obtained by treating a boron-containing dextran with a lower alcohol, and said dextran has such a characteristic that deposition is inhibited or the deposition rate is drastically reduced when using it in the form of a solution. Therefore, an isotonic sodium chloride solution of said dextran is suitably used as substitute plasma or external perfusate in an operation.
    Type: Application
    Filed: April 7, 2000
    Publication date: January 23, 2003
    Inventors: HARUO MACHIDA, SHIGEAKI KATO, YUUKI HIRATA, MITSUO AOKI, HIDEKI KOBATAKE