Patents by Inventor Koji Furushima

Koji Furushima 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).

  • Virus-free plasma protein compositions treated with porous membrane and process for producing the same
    Patent number: 6867285
    Abstract: Contaminant viruses can be efficiently removed almost without losing the activity of protein by subjecting a plasma protein composition having a high risk of viral contamination to a treatment with a porous membrane having a pore size greater than a single-particle size of the virus, particularly by subjecting a plasma protein composition to a fractionation treatment by precipitation, before the porous membrane treatment. Particularly, a fibrinogen composition substantially free of non-enveloped viruses, Parvovirus among others, can be provided. By the application of the present invention, a safe plasma protein preparation free of viruses can be conveniently provided.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: March 15, 2005
    Assignee: Mitsubishi Pharma Corporation
    Inventors: Tsuyoshi Takahashi, Koji Furushima, Masanori Morita, Muneo Tsujikawa, Takeru Urayama, Nobuaki Hamato
  • Virus-free plasma protein compositons treated with porous membrane and process for producing the same
    Publication number: 20030069399
    Abstract: Contaminant viruses can be efficiently removed almost without losing the activity of protein by subjecting a plasma protein composition having a high risk of viral contamination to a treatment with a porous membrane having a pore size greater than a single-particle size of the virus, particularly by subjecting a plasma protein composition to a fractionation treatment by precipitation, before the porous membrane treatment. Particularly, a fibrinogen composition substantially free of non-enveloped viruses, Parvovirus among others, can be provided. By the application of the present invention, a safe plasma protein preparation free of viruses can be conveniently provided.
    Type: Application
    Filed: July 15, 2002
    Publication date: April 10, 2003
    Inventors: Tsuyoshi Takahashi, Koji Furushima, Masanori Morita, Muneo Tsujikawa, Takeru Urayama, Nobuaki Hamato