Patents by Inventor Narumi Muraoka

Narumi Muraoka 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).

  • Polyglycerol alkyl ether type nonionic surfactant
    Patent number: 8133922
    Abstract: Disclosed is a polyglycerol alkyl ether nonionic surfactant which is a nonionic surfactant composed of polyglycerol alkyl ethers and has a polyglycerol monoalkyl ether content of 75 percent by weight or more and a polyglycerol dialkyl ether content of 5 percent by weight or less. This nonionic surfactant is an aliphatic nonionic surfactant, is thereby environmentally friendly, has a superior surface activity equivalent to those of aromatic nonionic surfactants, exhibits a superior emulsifying activity stably over time, and is satisfactorily usable in general purposes.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: March 13, 2012
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Yuichi Sakanishi, Narumi Muraoka
  • POLYGLYCEROL ALKYL ETHER TYPE NONIONIC SURFACTANT
    Publication number: 20090239958
    Abstract: Disclosed is a polyglycerol alkyl ether nonionic surfactant which is a nonionic surfactant composed of polyglycerol alkyl ethers and has a polyglycerol monoalkyl ether content of 75 percent by weight or more and a polyglycerol dialkyl ether content of 5 percent by weight or less. This nonionic surfactant is an aliphatic nonionic surfactant, is thereby environmentally friendly, has a superior surface activity equivalent to those of aromatic nonionic surfactants, exhibits a superior emulsifying activity stably over time, and is satisfactorily usable in general purposes.
    Type: Application
    Filed: February 17, 2009
    Publication date: September 24, 2009
    Applicant: DAICEL CHEMICAL INDUSTRIES, LTD.
    Inventors: Yuichi SAKANISHI, Narumi Muraoka