Patents by Inventor Shuichi Wakamatsu

Shuichi Wakamatsu 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: 4950810
    Abstract: A selective process for preparing a 2,4- or 3,6-di-substituted phenol compound which comprises reacting an olefin compound of the formula: ##STR1## wherein R.sup.1 is hydrogen, halogen, alkyl, halogen substituted alkyl, aryl, halogen substituted-aryl or alkyl substituted-aryl; and R.sup.2, R.sup.3 and R.sup.4 are the same or different and each is hydrogen, halogen, alkyl, halogen substituted-alkyl or aralkyl; with a phenol compound of the formula: ##STR2## wherein R.sup.5 is hydrogen, hydroxy, halogen, alkyl, halogen substituted-alkyl, alkoxy or --C(R.sup.6)(R.sup.7)CH(R.sup.8)(R.sup.9) (wherein R.sup.6 is hydrogen, halogen, alkyl, halogen substituted-alkyl, aryl, halogen substituted-aryl or alkyl substituted-aryl; and R.sup.7, R.sup.8 and R.sup.9 are the same or different and each is hydrogen, halogen, alkyl, halogen substituted-alkyl or aralkyl), in the presence of a phosphorus compound and a carboxylic acid compound as catalysts.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: August 21, 1990
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Ryoichi Kinishi, Shuichi Wakamatsu, Tetsuji Ike
  • Patent number: 4144405
    Abstract: Each Kanji-character is divided into a plurality of part contours constituting the Kanji-character. The part contours of a character are sequentially designated according to the conventional order of writing various parts of the character by an input unit. In an output unit the designated part contours are sequentially printed or otherwise written for completing a character by the combination of one or more part contours. Between the input and output units is provided a processing unit for controlling the relative position and order of the part contours to be written. Space means is also provided to provide spaces between adjacent written characters. According to the system some of the part contours are used in common for synthesizing different Kanji-characters.
    Type: Grant
    Filed: August 5, 1977
    Date of Patent: March 13, 1979
    Inventor: Shuichi Wakamatsu