Patents by Inventor Osamu Nakachi

Osamu Nakachi 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).

  • Antipsychotic drug
    Patent number: 5112863
    Abstract: The present invention provides an antipsychotic drug containing essentially an N-acyl amino acid derivative represented by the following general formula:RCO-Awherein R indicates an alkyl or alkenyl having 1-25 carbon atoms, and A is an amino acid residue. The compound is similar to natural products and has little side effect by acting directly to brain cells after passing through easily the blood brain barrier.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: May 12, 1992
    Assignee: Nippon Oil & Fats Co., Ltd.
    Inventors: Atsushi Hashimoto, Hidehiko Hibino, Osamu Nakachi
  • Light curable dental composition
    Patent number: 4923905
    Abstract: A light curable dental composition is provided. The composition comprises an ethylenic unsaturated compound and a light polymerization initiator. The light polymerization initiator is a combination of an .alpha.-diketone and a polyperoxy ester containing a benzophenone group and represented by the general formula (I) of: ##STR1## wherein R.sub.1 and R.sub.1 ' represent a tertiary alkyl group or a tertiary aralkyl group and R.sub.2 and R.sub.2 ' represent a hydrogen atom, a tertiary alkoxy group or a tertiary aralkyloxy group.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: May 8, 1990
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Eiichi Masuhara, Yoshinori Kadoma, Takeo Matsumoto, Takeshi Komai, Eiichi Yamada, Osamu Nakachi, Godo Irukayama
  • Light curable dental liquid or paste
    Patent number: 4824876
    Abstract: A light curable dental liquid or paste comprises an ethylenic unsaturated monomer, a light polymerization initiator and an organic filler. The light polymerization initiator is a combination of an organic peroxide and a pyrylium salt compound of: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each represents a hydrogen atom, an alkyl group and the like, X stands for an oxygen or sulfur atom and Y for an anionic functional group.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: April 25, 1989
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Takeo Matsumoto, Eiichi Yamada, Osamu Nakachi, Godo Irukayama, Yoshihiro Minoshima
  • Light curable dental composition
    Patent number: 4746685
    Abstract: A light curable dental composition is provided. The composition comprises an ethylenic unsaturated compound and a light polymerization initiator. The light polymerization initiator is selected from a combination of an organic peroxide and a pyrylium salt compound of: ##STR1## Wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group and the like, X stands for an oxygen or sulfur atom and Y for an anionic functional group; a polyperoxy ester containing a benzophenone group; and a combination the polyperoxy ester and an .alpha.-diketone.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: May 24, 1988
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Eiichi Masuhara, Yoshinori Kadoma, Takeo Matsumoto, Takeshi Komai, Eiichi Yamada, Osamu Nakachi, Godo Irukayama