Patents by Inventor Shuji Sonezaki

Shuji Sonezaki 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: 20080262349
    Abstract: There is provided an ultrasonic cancer treatment enhancer and cell killer that can significantly improve the effect of treating cancer by ultrasonic irradiation while ensuring a high level of safety. The ultrasonic cancer treatment enhancer and cell killer comprise metal semiconductor particles and can be activated upon ultrasonic irradiation to kill or destruct cancer cells.
    Type: Application
    Filed: October 26, 2006
    Publication date: October 23, 2008
    Applicant: TOTO LTD.
    Inventors: Koki Kanehira, Shuji Sonezaki, Yumi Ogami, Toshiaki Banzai
  • Publication number: 20080261805
    Abstract: Photocatalytic titanium dioxide particles are disclosed having improved dispersibility into an aqueous solvent not only under neutral physiological conditions in vivo but also over a wide pH range, and improved cell affinity and cell uptake property. The photocatalytic titanium dioxide particles comprise particles comprising photocatalytic titanium dioxide and a cationic hydrophilic polymer modifying surfaces of the photocatalytic titanium dioxide particles, wherein the hydrophilic polymer is bonded to the photocatalytic titanium dioxide particles. The photocatalytic titanium dioxide particles are very useful for medical applications, such as destruction of cancer cells.
    Type: Application
    Filed: March 27, 2006
    Publication date: October 23, 2008
    Applicant: TOTO LTD.
    Inventors: Koki Kanehira, Shuji Sonezaki, Yumi Ogami, Toshiaki Banzai, Junji Kameshima
  • Publication number: 20060281087
    Abstract: A titanium dioxide composite having a molecular recognition capacity is obtained by modifying the surface of a fine titanium dioxide particle with a hydrophilic polymer in such a manner that titanium dioxide is bonded via an ester bond to a carboxyl group of the hydrophilic polymer and immobilizing a molecule having an ability to specifically bind to a target molecule to the carboxyl residue of the hydrophilic polymer. Due to the molecule distinguishability, this titanium dioxide complex can bind specifically to an endocrine disrupting chemical, a pathogenic factor, a cancer cell and the like and decompose the same by a photocatalytic function.
    Type: Application
    Filed: March 31, 2004
    Publication date: December 14, 2006
    Inventors: Shuji Sonezaki, Koki Kanehira, Shinichi Yagi, Yumi Ogami
  • Publication number: 20060264520
    Abstract: Surface-modified titanium dioxide particles which have a surface chemically modified with a hydrophilic polymer, wherein a carboxyl group of the hydrophilic polymer and titanium dioxide are bound through an ester bonding; and a method for producing the surface-modified titanium dioxide fine particles, which comprises mixing a dispersion comprising titanium dioxide fine particles having a particle size of 2 to 200 nm and a solution of a water-soluble polymer, heating the resultant mixture to a temperature of 80 to 220° C., to thereby bind both the components through an ester bonding, and removing an unbound water-soluble polymer, to purify the resuultant particles. The surface-modified titanium dioxide fine particles exhibit excellent dispersibility and stability in an aqueous solvent over a wide pH region including a neutral range.
    Type: Application
    Filed: March 31, 2004
    Publication date: November 23, 2006
    Inventors: Shuji Sonezaki, Toshiaki Banzai, Koki Kanehira, Shinichi Yagi, Yumi Ogami