Patents by Inventor Akira Taisha

Akira Taisha 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).

  • Organic mixed complex
    Patent number: 4889934
    Abstract: Novel organic mixed complexes are provided which have the general formulaD.sup.+.[A.TCNQ]wherein D.sup.+ is an N-alkylonium cation derived from a nitrogen-containing hetercyclic compound (D) selected from the group consisting of pyridines, guinolines, isoquinolines and imidazoles and [A.TCNQ] is an anion radical derived from a 2,5-bis[(alkoxycarbonyl)-ethyl]-7,7,8,8-tetracyanoquinodimethane (A) of the formula ##STR1## in which R is an alkyl group containing 1-10 carbon atoms, and 7,7,8,8-tetracyanoquinodimethane (TCNQ).
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: December 26, 1989
    Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takeo Kawabata, Masahiko Miyashita, Akira Taisha
  • Organic complexes of a cation of a heterocyclic nitrogen compound and an anion of a 2,5-disubstituted-7,7,8,8-tetracyanoquinodiethmane
    Patent number: 4801713
    Abstract: Novel, highly electroconductive organic complexes are disclosed which have the general formulaD.sup.+.A.sup.-wherein the constituent D.sup.+ is an N-alkyl-onium cation (D.sup.+) derived from a nitrogen-containing heterocyclic compound (D) selected from the group consisting of pyridines, quinolines, isoquinolines and imidazoles and the constituent A.sup.- is the anion radical corresponding to a 2,5-disubstituted-7,7,8,8-tetracyanoquinodimethane (A) of the general formula ##STR1## wherein X is --COOR (R being an alkyl group containing 1-10 carbon atoms) or --CN.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: January 31, 1989
    Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takeo Kawabata, Akira Taisha
  • Process for preparing aminoacetaldehyde dialkyl acetals
    Patent number: 4792630
    Abstract: A process for preparing an aminoacetaldehyde dialkyl acetal which comprises reacting a halogenoacetaldehyde dialkyl acetal with ammonia or an alkylamine in an aqueous medium in the simultaneous presence of an alkali metal hydroxide or of an alkaline earth metal hydroxide, and distilling the resulting reaction mixture.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: December 20, 1988
    Assignee: Nippon Gosei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Akira Taisha, Takeo Kawabata, Takehiko Kakimoto, Kazumasa Hirata