Patents by Inventor Touru Tsuchiya

Touru Tsuchiya 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).

  • Method for producing thiadiazine compounds
    Patent number: 5138053
    Abstract: There is disclosed a method for producing 2,6-bis(disubstituted amino)-1,3,5-thiadiazine-4-one compounds represented by formula (I). The method comprises reacting an N,N-disubstituted cyanamide represented by formula (II) with carbonyl sulfide represented by formula (III) under a high pressure. Formula (I) ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group or R.sub.1 and R.sub.2 may bond together to form a ring, Formula (II) ##STR2## wherein R.sub.1 and R.sub.2 each have the same meanings as in formula (I), Formula (III)S.dbd.C.dbd.O.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: August 11, 1992
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Masahiko Yasumoto, Touru Tsuchiya, Yoichi Taguchi, Isao Shibuya, Katsumi Yonemoto