Patents by Inventor Yoko Takasu

Yoko Takasu 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).

  • Sericin-containing material, process for producing the same method of using the same
    Patent number: 6815427
    Abstract: The object of the present invention is to elucidate a biologically active function of a component constituting undegraded sericin and to provide a novel medical material, cosmetic material, etc. utilizing the functional composition. Disclosed is a cell growth promoter obtainable by elution from a fiber discharged by a domestic silkworm, e.g., cocoon filaments or the like, wherein the cell growth promoter comprises sericin having a molecular weight of about 400,000 as measured by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) as a main component. This cell growth promoting agent (substance) is extremely useful because growth of cells is promoted when it is used in a wound dressing material, a vascular endothelium forming material and an organ forming material for medical use, in a cell culture base material for biological use, or in a cosmetic material for skin care use.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: November 9, 2004
    Assignee: National Institute of Agrobiological Sciences
    Inventors: Kozo Tsubouchi, Hiromi Yamada, Yoko Takasu
  • Process for producing functional silk fibroin and utilization of the same
    Publication number: 20030165548
    Abstract: Provided is a process for producing undegraded silk fibroin, which comprises dissolving a cocoon layer or cocoon yarn of fresh, dry or cooked cocoons, raw silk, or silk fabrics, or residual yarns thereof in an aqueous solution of a neutral salt, and then subjecting the resulting solution to fractional precipitation to separate silk fibroin from silk sericin; subjecting the resulting solution to the following step a) or b):
    Type: Application
    Filed: October 8, 2002
    Publication date: September 4, 2003
    Inventors: Kozo Tsubouchi, Hiroo Yamada, Yoko Takasu, Hiroshi Nakao
  • Sericin-containing material, process for producing the same method of using the same
    Publication number: 20030087433
    Abstract: The object of the present invention is to elucidate a biologically active function of a component constituting undegraded sericin and to provide a novel medical material, cosmetic material, etc. utilizing the functional composition.
    Type: Application
    Filed: June 24, 2002
    Publication date: May 8, 2003
    Inventors: Kozo Tsubouchi, Hiromi Yamada, Yoko Takasu
  • Material for activating epidermal cell multiplication
    Patent number: 6440740
    Abstract: The present invention provides a novel material for activating epidermal cell multiplication on which not only effective adhesion and multiplication of human and mammalian epidermal cells is accomplished also intercellular adhesion is promoted to form a plain cellular layer. The present invention provides a material for activating epidermal cell multiplication which contains silk fibroin of &agr;-type or &agr;-helix X-ray diffraction pattern as a principal constituent. The present material fulfills the principal requirements for activating epidermal cells of greatly improved cellular adhesion rate, multiplication, intercellular adhesion and growth of cell layers.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: August 27, 2002
    Assignees: Japan as represented by Director General of National Institute of Sericultural and Entomological Science, Ministry of Agriculture, Forestry and Fisheries
    Inventors: Kozo Tsubouchi, Hiromi Yamada, Yoko Takasu