Patents by Inventor Katsuhiro Sugihara

Katsuhiro Sugihara 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 composite preparation containing nucleic acid
    Patent number: 6746690
    Abstract: A method for producing a composition including a nucleic-acid-containing complex is characterized in that two single strand nucleic acid polymers which can at least partly form double strands are separately mixed, in a single strand form, with a cationic carrier or with source materials for the cationic carrier before the cationic carrier is formed. The resulting mixture is then dispersed in water during the production process of the nucleic-acid-containing complex.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: June 8, 2004
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Katsuhiro Sugihara, Junzo Seki, Kazuko Hirabayashi
  • Process for producing composite preparation containing nucleic acid
    Publication number: 20030091622
    Abstract: A method for producing a composition including a nucleic-acid-containing complex is characterized in that two single strand nucleic acid polymers which can at least partly form double strands are separately mixed, in a single strand form, with a cationic carrier or with source materials for the cationic carrier before the cationic carrier is formed. The resulting mixture is then dispersed in water during the production process of the nucleic-acid-containing complex.
    Type: Application
    Filed: November 14, 2002
    Publication date: May 15, 2003
    Inventors: Katsuhiro Sugihara, Junzo Seki, Kazuko Hirabayashi
  • Process for producing composite preparation containing nucleic acid
    Patent number: 6545138
    Abstract: A method for producing a composition including a nucleic-acid-containing complex is characterized in that two single strand nucleic acid polymers which can at least partly form double strands are separately mixed, in a single strand form, with a cationic carrier or with source materials for the cationic carrier before the cationic carrier is formed. The resulting mixture is then dispersed in water during the production process of the nucleic-acid-containing complex.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: April 8, 2003
    Assignee: Nippon Shinyaku Co., Ltd.
    Inventors: Katsuhiro Sugihara, Junzo Seki, Kazuko Hirabayashi