Patents by Inventor Ryu Sato

Ryu Sato 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).

  • Patent number: 7053173
    Abstract: Novel di-, tri-, or tetra-thiols or thiolates of biphenyl, biphenyl derivatives, terphenyl or terphenyl derivatives, as represented by general formula (A), wherein M1 and M2 are each independently selected from the group consisting of H, Na, Li and K, and R1 to R7 are each H or an organic group, with the proviso that M1, M2 and R1 to R7 may be the same or different from each other; E1 and E2 are SM3 and SM4 (wherein M3 and M4 are each selected from the same group as defined above for M1 or M2) or each a group selected from among those as defined above for R1 to R7; and n is 1 or 0, with the proviso that when n is 0, E1 and E2 are SM3 and SM4
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: May 30, 2006
    Assignee: Japan Science and Technology Agency
    Inventor: Ryu Sato
  • Patent number: 6927309
    Abstract: The invention aims at providing novel sulfur compounds, molecular compounds containing the same as the component compound, and so on. The above aim is achieved by using sulfur compounds of the general formula (I) wherein Rs are each independently hydrogen, optionally substituted C1-6 alkyl, optionally substituted C2-6 alkenyl, optionally substituted aryl, chloro, or bromo; m is an integer of 0, 1, or 2; and Z is a group represented by any of the general formulae (II) to (V) (wherein R and m are each as defined above; W is hydrogen or C1-6 alkyl; and Y is a direct bond, C1-3 alkylene, or phenylene).
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: August 9, 2005
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Ryu Sato, Hiroshi Suzuki
  • Publication number: 20040176643
    Abstract: The invention aims at providing novel sulfur compounds, molecular compounds containing the same as the component compound, and so on. The above aim is achieved by using sulfur compounds of the general formula (I) wherein Rs are each independently hydrogen, optionally substituted C1-6 alkyl, optionally substituted C2-6 alkenyl, optionally substituted aryl, chloro, or bromo; m is an integer of 0, 1, or 2; and Z is a group represented by any of the general formulae (II) to (V) (wherein R and m are each as defined above; W is hydrogen or C1-6 alkyl; and Y is a direct bond, C1-3 alkylene, or phenylene).
    Type: Application
    Filed: March 10, 2004
    Publication date: September 9, 2004
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Ryu Sato, Hiroshi Suzuki
  • Patent number: 6740782
    Abstract: The invention aims at providing novel sulfur compounds, molecular compounds containing the same as the component compound, and so on. The above aim is achieved by using sulfur compounds of the general formula (I) wherein Rs are each independently hydrogen, optionally substituted C1-6 alkyl, optionally substituted C2-6 alkenyl, optionally substituted aryl, chloro, or bromo; m is an integer of 0, 1, or 2; and Z is a group represented by any of the general formulae (II) to (V) (wherein R and m are each as defined above; W is hydrogen or C1-6 alkyl; and Y is a direct bond, C1-3 alkylene, or phenylene).
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: May 25, 2004
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Ryu Sato, Hiroshi Suzuki
  • Publication number: 20040092775
    Abstract: Novel di-, tri-, or tetra-thiols or thiolates of biphenyl, biphenyl derivatives, terphenyl or terphenyl derivatives, as represented by general formula (A), wherein M1 and M2 are each independently selected from the group consisting of H, Na, Li and K, and R1 to R7 are each H or an organic group, with the proviso that M1, M2 and R1 to R7 may be the same or different from each other; E1 and E2 are SM3 and SM4 (wherein M3 and M4 are each selected from the same group as defined above for M1 or M2) or each a group selected from among those as defined above for R1 to R7; and n is 1 or 0, with the proviso that when n is 0, E1 and E2 are SM3 and SM4.
    Type: Application
    Filed: September 23, 2003
    Publication date: May 13, 2004
    Inventor: Ryu Sato
  • Publication number: 20030130358
    Abstract: The invention aims at providing novel sulfur compounds, molecular compounds containing the same as the component compound, and so on. The above aim is achieved by using sulfur compounds of the general formula (I) wherein Rs are each independently hydrogen, optionally substituted C1-6 alkyl, optionally substituted C2-6 alkenyl, optionally substituted aryl, chloro, or bromo; m is an integer of 0, 1, or 2; and Z is a group represented by any of the general formulae (II) to (V) (wherein R and m are each as defined above; W is hydrogen or C1-6 alkyl; and Y is a direct bond, C1-3 alkylene, or phenylene).
    Type: Application
    Filed: September 12, 2002
    Publication date: July 10, 2003
    Inventors: Ryu Sato, Hiroshi Suzuki
  • Patent number: 5698580
    Abstract: Antiviral agents comprising, as an active ingredient, a 1,4-dihydro-2,3-benzodithiin derivative of the formula ##STR1## wherein each symbol is as defined in the Specification, or a pharmacologically acceptable salt thereof. The antiviral agents of the present invention have superior antiviral activity and are effective for the preventive and therapeutic treatment of viral diseases caused typically by RS virus.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: December 16, 1997
    Assignee: Rational Drug Design Laboratories
    Inventors: Tsuyoshi Kajiyashiki, Ryu Sato, Tomoyuki Yokota, Kenji Sudo, Wataru Watanabe, Shiro Shigeta