Patents by Inventor Naofumi Yano

Naofumi Yano 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).

  • Patent number: 6866840
    Abstract: The object of the invention is to provide a tooth-cleaning composition capable of well removing staining matters such as tar of tobacco and tea incrustation from teeth merely by cleaning teeth with it in a simplified manner for a short period of time not damaging the surfaces of teeth to thereby estethicize the thus-cleaned teeth, and to provide a method for producing the composition. The object can be attained by a tooth-cleaning composition that contains silicon nitride having a mean particle size of from 0.5 to 10 ?m. The method for producing the tooth-cleaning composition comprises mixing powder of silicon nitride, powder of natural wax, and a solution that contains a water-soluble polymer followed by stirring the resulting mixture until its viscosity at 25° C. reaches from 100,000 to 500,000 cps.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: March 15, 2005
    Assignee: Kanebo, Ltd.
    Inventors: Naofumi Yano, Hiroyuki Sasaki
  • Publication number: 20040047813
    Abstract: The object of the invention is to provide a tooth-cleaning composition capable of well removing staining matters such as tar of tobacco and tea incrustation from teeth merely by cleaning teeth with it in a simplified manner for a short period of time not damaging the surfaces of teeth to thereby estethicize the thus-cleaned teeth, and to provide a method for producing the composition. The object can be attained by a tooth-cleaning composition that contains silicon nitride having a mean particle size of from 0.5 to 10 &mgr;m. The method for producing the tooth-cleaning composition comprises mixing powder of silicon nitride, powder of natural wax, and a solution that contains a water-soluble polymer followed by stirring the resulting mixture until its viscosity at 25° C. reaches from 100,000 to 500,000 cps.
    Type: Application
    Filed: September 27, 2002
    Publication date: March 11, 2004
    Applicant: KANEBO LTD.
    Inventors: Naofumi Yano, Hiroyuki Sasaki