Patents by Inventor Naosuke Sumi

Naosuke Sumi 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).

  • Controlled release carrier for drugs containing silk fibroin porous material
    Patent number: 10322185
    Abstract: The present invention can provide a controlled drug release carrier formed by using a silk fibroin porous material, which has high drug controlled release rate, controllability of the drug controlled release speed, high strength, easy handleability, skin care properties from high biocompatibility, high water retentivity, and capability of efficiently retaining a drug.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: June 18, 2019
    Assignees: HITACHI CHEMICAL COMPANY, LTD., ST. MARIANNA UNIVERSITY, SCHOOL OF MEDICINE, NATIONAL INSTITUTE OF AGROBIOLOGICAL SCIENCES
    Inventors: Kazutoshi Kobayashi, Kunihiro Suto, Naosuke Sumi, Hajime Inoue, Yasushi Tamada
  • Method for producing porous silk fibroin material
    Patent number: 9328135
    Abstract: A method for producing a porous silk fibroin material, containing steps of: freezing a silk fibroin solution containing a silk fibroin aqueous solution having an aliphatic carboxylic acid added thereto; and then melting the frozen solution, thereby providing a porous material. A method for producing a porous silk fibroin material having excellent mechanical characteristics may be provided.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: May 3, 2016
    Assignees: Hitachi Chemical Company, Ltd., National Institute of Agrobiological Sciences
    Inventors: Kazutoshi Kobayashi, Naosuke Sumi, Tsuyoshi Abe, Yasushi Tamada
  • Silk fibroin porous material and method for producing same
    Patent number: 9090703
    Abstract: By a silk fibroin porous material containing silk fibroin and an amino acid and a method for producing a silk fibroin porous material including freezing a fibroin solution having an amino acid added to a fibroin aqueous solution and subsequently thawing the solution to obtain a porous material, a porous material which does not contain a solvent and which is high in safety and a method for producing the same are provided.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: July 28, 2015
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Kazutoshi Kobayashi, Naosuke Sumi, Kazuo Kusaki, Tomoko Machida
  • SUSTAINED RELEASE CARRIER FOR DRUGS
    Publication number: 20150094262
    Abstract: The present invention can provide a controlled drug release carrier formed by using a silk fibroin porous material, which has high drug controlled release rate, controllability of the drug controlled release speed, high strength, easy handleability, skin care properties from high biocompatibility, high water retentivity, and capability of efficiently retaining a drug.
    Type: Application
    Filed: April 24, 2013
    Publication date: April 2, 2015
    Applicants: Hitachi Chemical Company, Ltd., St. Marianna University, School of Medicine, National Institute of Agrobiological Sciences
    Inventors: Kazutoshi Kobayashi, Kunihiro Suto, Naosuke Sumi, Hajime Inoue, Yasushi Tamada
  • METHOD FOR PRODUCING POROUS SILK FIBROIN MATERIAL
    Publication number: 20130197193
    Abstract: A method for producing a porous silk fibroin material, containing steps of: freezing a silk fibroin solution containing a silk fibroin aqueous solution having an aliphatic carboxylic acid added thereto; and then melting the frozen solution, thereby providing a porous material. A method for producing a porous silk fibroin material having excellent mechanical characteristics may be provided.
    Type: Application
    Filed: January 7, 2013
    Publication date: August 1, 2013
    Inventors: Kazutoshi KOBAYASHI, Naosuke SUMI, Tsuyoshi ABE, Yasushi TAMADA
  • SILK FIBROIN POROUS MATERIAL AND METHOD FOR PRODUCING SAME
    Publication number: 20130109836
    Abstract: By a silk fibroin porous material containing silk fibroin and an amino acid and a method for producing a silk fibroin porous material including freezing a fibroin solution having an amino acid added to a fibroin aqueous solution and subsequently thawing the solution to obtain a porous material, a porous material which does not contain a solvent and which is high in safety and a method for producing the same are provided.
    Type: Application
    Filed: April 5, 2011
    Publication date: May 2, 2013
    Inventors: Kazutoshi Kobayashi, Naosuke Sumi, Kazuo Kusaki, Tomoko Machida