Patents by Inventor Katsunori Maruta

Katsunori Maruta 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).

  • NOVEL HETEROARYL DERIVATIVE
    Publication number: 20080306275
    Abstract: A heteroaryl derivative of the formula (1): (wherein Ring Z is an optionally substituted heteroaryl, R1 is a carboxyl group or an alkoxycarbonyl group, etc., W1 and W2 are an optionally substituted lower alkylene, Ar1 is an optionally substituted arylene or an optionally substituted heteroarylene, W3 is a single bond, a lower alkylene, a lower alkenylene, etc., W4 is a single bond, —NR10—, etc., Ar2 is an optionally substituted aryl or an optionally substituted heteroaryl), or a prodrug thereof, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: July 15, 2008
    Publication date: December 11, 2008
    Applicant: Danippon Sumitomo Pharma Co., Ltd.
    Inventors: Ken-ichi WATANABE, Katsunori Maruta, Kantaro Ushiroda, Ryu Nagata
  • Heteroaryl derivative
    Patent number: 7425642
    Abstract: A heteroaryl derivative of the formula (1): (wherein Ring Z is an optionally substituted heteroaryl, R1 is a carboxyl group or an alkoxycarbonyl group, etc., W1 and W2 are an optionally substituted lower alkylene, Ar1 is an optionally substituted arylene or an optionally substituted heteroarylene, W3 is a single bond, a lower alkylene, a lower alkenylene, etc., W4 is a single bond, —NR10—, etc., Ar2 is an optionally substituted aryl or an optionally substituted heteroaryl), or a prodrug thereof, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: September 16, 2008
    Assignee: Dainippon Sumitomo Pharma Co. ,Ltd.
    Inventors: Ken-ichi Watanabe, Katsunori Maruta, Kantaro Ushiroda, Ryu Nagata
  • Pyrrole derivative
    Patent number: 7220773
    Abstract: A novel pyrrole derivative represented by the following formula (1) and a salt thereof: wherein R1 means substituted alkenyl, etc.; R2 means substituted benzoyl, etc.; and R3 to R5 each means hydrogen, alkyl, halogeno, etc. The derivative and salt have antidiabetic activity.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: May 22, 2007
    Assignee: Dainippon Sumitomo Pharma Co., Ltd.
    Inventors: Ryu Nagata, Katsunori Maruta, Kiyotaka Iwai, Makoto Kitoh, Kantaro Ushiroda, Kozo Yoshida
  • Novel heteroaryl derivative
    Publication number: 20060194857
    Abstract: A heteroaryl derivative of the formula (1): (wherein Ring Z is an optionally substituted heteroaryl, R1 is a carboxyl group or an alkoxycarbonyl group, etc., W1 and W2 are an optionally substituted lower alkylene, Ar1 is an optionally substituted arylene or an optionally substituted heteroarylene, W3 is a single bond, a lower alkylene, a lower alkenylene, etc., W4 is a single bond, —NR10—, etc., Ar2 is an optionally substituted aryl or an optionally substituted heteroaryl), or a prodrug thereof, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: July 13, 2004
    Publication date: August 31, 2006
    Inventors: Ken-ichi Watanabe, Katsunori Maruta, Kantaro Ushiroda, Ryu Nagata
  • Pyrrole derivative
    Publication number: 20040162331
    Abstract: A novel pyrrole derivative represented by the following formula (1) and a salt thereof: 1
    Type: Application
    Filed: October 16, 2003
    Publication date: August 19, 2004
    Inventors: Ryu Nagata, Katsunori Maruta, Kiyotaka Iwai, Makoto Kitoh, Kantaro Ushiroda, Kozo Yoshida