Patents by Inventor Shin-ichi Akiyama

Shin-ichi Akiyama 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: 6861471
    Abstract: The present invention provides a coating composition for polyolefin resins, comprising a resin obtained by graft-copolymerizing at least one member selected from the group consisting of an ?,?-unsaturated carboxylic acid and an acid anhydride thereof with at least one member selected from the group consisting of polypropylene and a propylene-?-olefin copolymer, chlorinating the graft copolymer to give an acid-modified chlorinated polyolefin, linking a (meth)acrylic ester having one hydroxyl group to the polyolefin via an ester linkage, and then graft-copolymerizing (meth)acrylic acid monomers with the polyolefin; and a process for producing the composition.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: March 1, 2005
    Assignee: Toyo Kasei Kogyo Company Limited
    Inventors: Takafumi Masuda, Shoji Maekawa, Shigeru Sugiyama, Shin-ichi Akiyama
  • Publication number: 20040147684
    Abstract: The present invention provides a coating composition for polyolefin resins, comprising a resin obtained by graft-copolymerizing at least one member selected from the group consisting of an &agr;,&bgr;-unsaturated carboxylic acid and an acid anhydride thereof with at least one member selected from the group consisting of polypropylene and a propylene-&agr;-olefin copolymer, chlorinating the graft copolymer to give an acid-modified chlorinated polyolefin, linking a (meth)acrylic ester having one hydroxyl group to the polyolefin via an ester linkage, and then graft-copolymerizing (meth)acrylic acid monomers with the polyolefin; and a process for producing the composition.
    Type: Application
    Filed: October 7, 2003
    Publication date: July 29, 2004
    Inventors: Takafumi Masuda, Shoji Maekawa, Shigeru Sugiyama, Shin-ichi Akiyama
  • Publication number: 20040048807
    Abstract: An angiogenesis inhibitor and drug inhibiting the tumor metastasis exasperated by TP which comprises, as an effective component, at least one kind of compound selected from the group consisting of 2-deoxy-L-ribose, 2-deoxy-L-ribose derivatives whose hydroxyl group is methylated and/or acylated and 2-deoxy-D-ribose derivatives whose hydroxyl group is methylated and/or acylated.
    Type: Application
    Filed: June 19, 2003
    Publication date: March 11, 2004
    Inventors: Shin-ichi Akiyama, Tatsuhiko Furukawa, Hiroshi Uchimiya
  • Patent number: 5508403
    Abstract: An agent for enhancing the drug effects of an antitumor drug, which comprises a compound of the formula I: ##STR1## or a pharmaceutically acceptable salt of the compound.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 16, 1996
    Assignee: Nissan Chemical Industries Ltd.
    Inventors: Shin-ichi Akiyama, Ryozo Sakoda, Kiyotomo Seto, Norimasa Shudo
  • Patent number: 5304550
    Abstract: Compounds of the formula (I): ##STR1## in which the nitrogen-containing hetero ring portion is 1,4-dihydropyridine ring or a pyridine ring, R.sup.1 is only present when the nitrogen-containing hetero ring is a 1,4-dihydropyridine ring, and Z is a group of the formula (II): ##STR2## in which R.sup.4 and R.sup.5 may be the same or different and together may form one divalent group, are effective agents for enhancing the antitumor effect of antitumor drugs.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: April 19, 1994
    Assignee: Nissan Chemical Industries Ltd.
    Inventors: Shin-ichi Akiyama, Ryozo Sakoda, Kiyotomo Seto, Norimasa Shudo
  • Patent number: 5130303
    Abstract: Compounds of the formula (I): ##STR1## in which the nitrogen-containing hetero ring portion is a 1,4-dihydropyridine ring or a pyridine ring, R.sup.1 is only present when the nitrogen-containing hetero ring is a 1,4-dihydropyridine ring, and Z is either a CO.sub.2 R.sup.8 group or a group of the formula (II): ##STR2## in which R.sup.4 and R.sup.5 may be the same or different and together may form one divalent group, are effective agents for enhancing the antitumor effect or antitumor drugs.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: July 14, 1992
    Assignee: Nissan Chemical Industries Ltd.
    Inventors: Shin-ichi Akiyama, Ryozo Sakoda, Kiyotomo Seto, Norimasa Shudo