Patents by Inventor Tadao Takahashi

Tadao Takahashi 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).

  • Sectional unit furniture assembly
    Patent number: 4153311
    Abstract: There is described a sectional unit furniture assembly which employs at least one connecting board for interconnecting at least two juxtaposed sectional units or columns of stacked sectional units, the connecting board having at opposite ends shelf portions capable of interlocking with side and rear wall sections of the respective units and a connecting portion interconnecting the two juxtaposed units or columns at a predetermined space from each other.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: May 8, 1979
    Inventor: Tadao Takahashi
  • Process for the selective disproportionation reaction of olefins
    Patent number: 4024201
    Abstract: In the disproportionation reaction of a linear olefin such as 1-butene cocted in the presence of a supported tungsten oxide catalyst such as a tungsten oxide-silica catalyst, isomerization of the olefin is inhibited and the conversion ratio for the disproportionation reaction of the olefin is increased by conducting the reaction in the presence of an amine compound such as ammonia or n-butylamine or a halogen compound such as chloroform.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: May 17, 1977
    Assignee: Director-General of the Agency of Industrial Science and Technology
    Inventor: Tadao Takahashi