Patents by Inventor Hiroyuki Kawamata

Hiroyuki Kawamata 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).

  • Oral composition
    Patent number: 9468593
    Abstract: The present invention provides an oral composition comprising hydroxyapatite, potassium nitrate, and calcium monohydrogen phosphate, wherein the composition has an increased ability to occlude dentinal tubules of a tooth and has an excellent inhibitory effect on hypersensitivity.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: October 18, 2016
    Assignee: Kabushiki Kaisha Sangi
    Inventors: Tomoki Saito, Hiroyuki Kawamata, Kazushi Ota, Shuji Sakuma
  • ORAL COMPOSITION
    Publication number: 20150202128
    Abstract: The present invention provides an oral composition comprising hydroxyapatite, potassium nitrate, and calcium monohydrogen phosphate, wherein the composition has an increased ability to occlude dentinal tubules of a tooth and has an excellent inhibitory effect on hypersensitivity.
    Type: Application
    Filed: September 4, 2013
    Publication date: July 23, 2015
    Inventors: Tomoki Saito, Hiroyuki Kawamata, Kazushi Ota, Shuji Sakuma
  • Compositions for dental tissue
    Patent number: 5833959
    Abstract: A composition for use in dental tissues includes hydroxyapatite having a particle size in a range from about 0.05 .mu.m to about 1.0 .mu.m. The amount of the hydroxyapatite is preferably a minimum of 0.1 percent by weight.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: November 10, 1998
    Assignee: Sangi Co., Ltd.
    Inventors: Kiminori Atsumi, Tsutomu Ishizaki, Hiroyuki Kawamata