Patents by Inventor Sakiko Tanaka

Sakiko Tanaka 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).

  • Process for preparing phosphorus compounds having phosphate-phosphonate bond
    Patent number: 7728162
    Abstract: A novel process for preparing in a high purity and in a high yield phosphorus compounds having a phosphate-phosphonate bond within one molecule, along with only a small amount of a by-product, without being restricted by the kind of a phosphonate having an alcoholic hydroxyl group which is a raw material, without using a catalyst such as magnesium chloride, but only using a nitrogen-containing basic compound.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: June 1, 2010
    Assignee: Daihachi Chemical Industry Co., Ltd.
    Inventors: Kazuo Fujimoto, Sakiko Tanaka
  • PROCESS FOR PREPARING PHOSPHORUS COMPOUNDS HAVING PHOSPHATE-PHOSPHONATE BOND
    Publication number: 20090062554
    Abstract: A novel process for preparing in a high purity and in a high yield phosphorus compounds having a phosphate-phosphonate bond within one molecule, along with only a small amount of a by-product, without being restricted by the kind of a phosphonate having an alcoholic hydroxyl group which is a raw material, without using a catalyst such as magnesium chloride, but only using a nitrogen-containing basic compound.
    Type: Application
    Filed: October 18, 2005
    Publication date: March 5, 2009
    Applicant: DAIHACHI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Kazuo Fujimoto, Sakiko Tanaka