Patents by Inventor Yujiro Ono

Yujiro Ono 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 producing benzofuran derivative
    Publication number: 20060142598
    Abstract: A novel process for efficiently and easily producing a compound represented by the formula: wherein ring A is a benzene ring that may be optionally further substituted in addition to the group represented by W, or a salt thereof; which comprises reacting a compound represented by the formula: wherein R1 and R2 are the same or different and each is a hydrogen atom, an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, Y is a halogen atom, ring A is a benzene ring that may be optionally further substituted in addition to the group represented by Y and ring B is an optionally substituted benzene ring, or a salt thereof, with a compound represented by the formula: WH wherein W is wherein ring C is an optionally substituted benzene ring, ring D is an optionally substituted 5- to 7-membered nitrogen-containing heterocyclic ring, R3 is a hydrogen atom, an aliphatic hydrocarbon group containing an aromatic group or an acyl group, and R4 is a hydrogen atom, an optio
    Type: Application
    Filed: February 22, 2006
    Publication date: June 29, 2006
    Inventors: Hiroyuki Tawada, Makoto Yamashita, Yujiro Ono
  • Process for producing benzofuran derivative
    Patent number: 7034166
    Abstract: A novel process for efficiently and easily producing a compound represented by the formula: wherein ring A is a benzene ring that may be optionally further substituted in addition to the group represented by W, or a salt thereof; which comprises reacting a compound represented by the formula: wherein R1 and R2 are the same or different and each is a hydrogen atom, an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, Y is a halogen atom, ring A is a benzene ring that may be optionally further substituted in addition to the group represented by Y and ring B is an optionally substituted benzene ring, or a salt thereof, with a compound represented by the formula: WH wherein W is wherein ring C is an optionally substituted benzene ring, ring D is an optionally substituted 5- to 7-membered nitrogen-containing heterocyclic ring, R3 is a hydrogen atom, an aliphatic hydrocarbon group containing an aromatic group or an acyl group, and R4 is a hydrogen atom, an optio
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: April 25, 2006
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Hiroyuki Tawada, Makoto Yamashita, Yujiro Ono
  • Process for producing benzofuran derivative
    Publication number: 20040210066
    Abstract: A novel process for efficiently and easily producing a compound represented by the formula: 1
    Type: Application
    Filed: January 7, 2004
    Publication date: October 21, 2004
    Inventors: Hiroyuki Tawada, Makoto Yamashita, Yujiro Ono
  • Guiding device for visually handicapped person
    Patent number: 5032836
    Abstract: A guide device for visually handicapped person which has a portable unit and a position indicator unit. The portable unit is carried by the visually handicapped person and includes a radio frequency signal oscillator. The position indicator unit is disposed to a desired place and includes a radio frequency signal receiver and a loud speaker.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: July 16, 1991
    Assignee: Namco, Ltd.
    Inventors: Yujiro Ono, Syuichi Nakatome, Yoshihide Kumada, Kenji Suzuki, Junichi Kawamura, Katunori Ota, Satoru Tomiyama