Patents by Inventor Junko Kanaya

Junko Kanaya 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: 4985171
    Abstract: An anthraquinone type compound which is represented by the following general formula (I) and which exhibits yellow to orange-colored hue; and a composition for liquid crystal display element obtained by dissolving the compound into liquid crystal: ##STR1## (where: X.sup.1 and X.sup.2 denote sulfur or selenium; and R.sup.1 and R.sup.2 represent a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted pyridyl group, a substituted or unsubstituted pyrmidyl group or a tetrahydronaphthyl group, with the following exceptions:(1) X.sup.1 =X.sup.2 =S; R.sup.1 =R.sup.2 =a substituted or unsubstituted phenyl group =(2) X.sup.1 =X.sup.2 =S; R.sup.1 =a substituted or unsubstituted naphthyl group; R.sup.2 =a phenyl group or a naphthyl group(3) X.sup.1 =X.sup.2 =Se; R.sup.1 =R.sup.2 =a tetrahydronaphthyl group).
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: January 15, 1991
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Konoe Miura, Tetsuo Ozawa, Junko Kanaya