Patents by Inventor Ryo Numazaki

Ryo Numazaki 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: 20090054697
    Abstract: The present invention provides a method for producing an unsaturated ether compound represented by general formula (2) below, the method comprising reacting an acetal represented by general formula (1) below in the presence of an aliphatic or aromatic sulfonic acid and an organic base having a total carbon number of 3 to 7. (In the formulae, R1, R2, and R3 may be the same or different and each represent substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl, or R1 and R2 form cycloalkyl together with the adjacent carbon atom.
    Type: Application
    Filed: April 26, 2006
    Publication date: February 26, 2009
    Applicant: KYOWA HAKKO CHEMICAL CO., LTD.
    Inventors: Ryo Numazaki, Katsuhiro Ito, Hiroshi Matsuoka, Iwao Hotta
  • Publication number: 20090035702
    Abstract: The present invention provides a process for producing a compound having a group represented by general formula (II): (wherein R1, R2, and R3 may be the same or different, and each represent a substituted or unsubstituted alkyl, a substituted or unsubstituted aryl, or a substituted or unsubstituted aralkyl, or R1 and R2 may bind to each other to form an alicyclic hydrocarbon ring together with the adjacent carbon atoms, or R2 and R3 may bind to each other to form a alicyclic heterocyclic ring together with the adjacent O—C—C that may have a substituent), which comprises allowing a compound having a hydroxyl group to react with halogenated alkyl ether represented by general formula (I): (wherein R1, R2, and R3 are the same as those defined above, respectively and X represents a halogen atom).
    Type: Application
    Filed: September 29, 2008
    Publication date: February 5, 2009
    Applicant: KYOWA HAKKO CHEMICAL CO., LTD.
    Inventors: Hiroshi Matsuoka, Junzo Yamano, Katsuhiro Ito, Ikuo Shimizu, Ryo Numazaki
  • Publication number: 20060177763
    Abstract: The present invention provides a process for producing a compound having a group represented by general formula (II). (wherein R1, R2, and R3 may be the same or different, and each represent a substituted or unsubstituted alkyl, a substituted or unsubstituted aryl, or a substituted or unsubstituted aralkyl, or R1 and R2 may bind to each other to form an alicyclic hydrocarbon ring together with the adjacent carbon atoms, or R2 and R3 may bind to each other to form a alicyclic heterocyclic ring together with the adjacent O—C—C that may have a substituent), which comprises allowing a compound having a hydroxyl group to react with halogenated alkyl ether represented by general formula (I): (wherein R1, R2, and R3 are the same as those defined above, respectively and X represents a halogen atom).
    Type: Application
    Filed: August 31, 2004
    Publication date: August 10, 2006
    Applicant: Kyowa Hakko Chemical Co., Ltd.
    Inventors: Hiroshi Matsuoka, Junzo Yamano, Katsuhiro Ito, Ikuo Shimizu, Ryo Numazaki