Patents by Inventor Nobuaki Shimizu

Nobuaki Shimizu 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: 4604493
    Abstract: The invention provides a novel compound 1-cyclohexyl-1,4-dimethyl decahydronaphthalene which is useful as fluids for traction drive. The compound can be synthesized by the hydrogenation of 1,4-dimethyl-4-phenyl-1,2,3,4-tetrahydronaphthalene and analytical results for the identification of the compound are given.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: August 5, 1986
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Nobuaki Shimizu, Toshiyuki Tsubouchi, Hitoshi Hata
  • Patent number: 4169079
    Abstract: A cyclodextrin derivative-containing a polystyrene based polymer containing units of structure having the formula: ##STR1## (wherein m is an integer of 1 to 10; n is 4, 5 or 6; R.sub.1 and R.sub.2 are hydrogen or alkyl groups containing 1 to 3 carbon atoms; and Z is an alkylene group containing 1 to 5 carbon atoms); a metal complex of the polystyrene based polymer; and a process for the production of the polystyrene based polymer or metal complex thereof.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: September 25, 1979
    Assignee: Iwao Tabushi
    Inventors: Iwao Tabushi, Nobuaki Shimizu, Kazuo Yamamura
  • Patent number: 4022845
    Abstract: This invention relates to a process for producing alkyl adamantanes by reacting tetracyclododecanes and hydrogen in the presence of a specific catalyst.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: May 10, 1977
    Assignee: Idemitsu, Kosan Kabushiki-Kaisha (Idemitsu Kosan Co., Ltd.)
    Inventors: Kosaku Honna, Nobuaki Shimizu, Konomu Kurisaki
  • Patent number: 3944626
    Abstract: Adamantane compound is obtained by isomerizing a tricyclic saturated hydrocarbon having 10 to 14 carbon atoms in the presence of an X- or Y-type zeolite catalyst subjected to ion exchange with one or two kinds of metal ions selected from the group consisting of ions of rare earth metals, calcium and magnesium. The preferred catalyst is a catalyst which is further loaded with 1 to 4 kinds of metals selected from the group consisting of germanium, platinum, rhenium, nickel, cobalt, copper, iron ruthenium and rhodium. This isomerization reaction is preferably carried out in the presence of hydrogen gas.
    Type: Grant
    Filed: April 16, 1974
    Date of Patent: March 16, 1976
    Inventors: Kosaku Honna, Nobuaki Shimizu, Konomu Kurisaki