Patents by Inventor Shuhei Nakaji

Shuhei Nakaji 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).

  • Publication number: 20030150813
    Abstract: The above-mentioned problems can be solved by an adsorber for body fluid treatment packed with an adsorbent coated with a hydrophilic polymer, which includes an adsorbent packing part not filled with a filling liquid, particularly the above-mentioned adsorber for body fluid treatment, wherein the adsorbent contains two or more kinds of metal salt type cation-exchange resins that are different from each other.
    Type: Application
    Filed: December 20, 2002
    Publication date: August 14, 2003
    Inventors: Nobuyuki Hayashi, Shuhei Nakaji
  • Publication number: 20030032914
    Abstract: To provide a blood processing system easy to operate and excellent in safety factor, the blood processing system includes a plasma separating unit for separating a plasma from a blood; a plasma purifying unit for purifying the separated plasma to which the plasma is introduced into the plasma purifying unit through a plasma introducing fluid circuit by means of a plasma feed pump, and a plasma return fluid circuit for returning the plasma, which has been purified by the plasma purifying unit, back to the plasma separating unit. A plasma inlet pressure gauge measures a pressure of the plasma at the plasma intake port of the plasma feed pump. A bypass fluid circuit extending between the plasma introducing fluid circuit and the plasma return fluid circuit for bypassing the plasma feed pump and the plasma purifying unit has a valve disposed therein for opening the bypass circuit.
    Type: Application
    Filed: August 8, 2002
    Publication date: February 13, 2003
    Applicant: KURARAY CO. LTD.
    Inventors: Masao Inoue, Akihiro Ike, Shuhei Nakaji
  • Patent number: 6514409
    Abstract: A hollow fiber membrane made of an ethylene-vinyl alcohol polymer, comprises a dense layer existing in the inner surface and a porous layer existing in the layer other than the dense layer, wherein the hollow fiber membrane has a porosity of 60 to 90%, an overall mass transfer coefficient for myoglobin in a water-based system of not less than 0.003 cm/min., and a rejection rate for albumin in a bovine blood system of not less than 97%. The EVA hollow fiber membrane is useful for hemopurification membranes such as hemodialysis membranes, hemodiafiltration membranes, hemofiltration membranes and continuous hemofiltration membranes, and a process for producing the same.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: February 4, 2003
    Assignee: Kuraray Co., Ltd.
    Inventors: Tomoki Kakiuchi, Koji Sekiguchi, Takeshi Suehiro, Shuhei Nakaji, Yoichi Matsumoto, Masato Takai, Nozomu Sugo, Hitoshi Tsuruta
  • Publication number: 20010015335
    Abstract: A hollow fiber membrane made of an ethylene-vinyl alcohol polymer, comprising a dense layer existing in the inner surface and a porous layer existing in the layer other than the dense layer, wherein the hollow fiber membrane has a porosity of 60 to 90%, an overall mass transfer coefficient for myoglobin in a water-based system of not less than 0.003 cm/min., and a rejection rate for albumin in a bovine blood system of not less than 97%. The EVA hollow fiber membrane is useful for hemopurification membranes such as hemodialysis membranes, hemodiafiltration membranes, hemofiltration membranes and continuous hemofiltration membranes, and a process for producing the same.
    Type: Application
    Filed: January 10, 2001
    Publication date: August 23, 2001
    Applicant: Kuraray Co. Ltd.
    Inventors: Tomoki Kakiuchi, Koji Sekiguchi, Takeshi Suehiro, Shuhei Nakaji, Yoichi Matsumoto, Masato Takai, Nozomu Sugo, Hitoshi Tsuruta
  • Patent number: 5041079
    Abstract: The present invention provides removing agents comprising a solid substance with a weakly acidic or weakly alkaline surface. Since the removing agents can be used for treating body fluid of a patient by, for example, extra-corporeal circulation system thereby effectively removing human immunodeficiency virus and/or its related compounds contained in the body fluid, it is expected that the life of the patient could be prolonged. The significance of the present invention therefore is great.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: August 20, 1991
    Assignee: Kuraray Co., Ltd.
    Inventors: Seisuke Takashima, Keiichi Kurokawa, Shuhei Nakaji, Ken Yamane, Ryosuke Murayama