Patents by Inventor Ikusei Nakamura

Ikusei Nakamura 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 hydrocracking a heavy hydrocarbon oil utilizing a faujasite aluminosilicate
    Patent number: 5338437
    Abstract: A hydrocracking catalyst for heavy hydrocarbon oils comprising a metallic element of the VIb Group and a metallic element of the VIII Group supported on a carrier containing a novel faujasite-type aluminosilicate which absorbs an infrared in a frequency region of 3740.+-.10 cm.sup.-1 in an absorption percentage A of at least 20% and absorbs an infrared in a frequency region of 3560 .+-.10 cm.sup.-1 in an absorption percentage B of at least 5%, the ratio of A/B being at least 2, has a specific surface area of at least 650 m.sup.2 /g, has a framework SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 20 to 50, and has a lattice constant of from 24.15 to 24.50 .ANG.. The novel faujasite-type aluminosilicate is produced by treating a faujasite-type zeolite with an acid.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: August 16, 1994
    Assignee: Research Association for Residual Oil Processing
    Inventors: Ryuichiro Iwamoto, Ikusei Nakamura, Akira Iino
  • Faujasite-type aluminosilicates, a method of producing the same, and hydrocracking catalysts for heavy hydrocarbon oils
    Patent number: 5139984
    Abstract: A hydrocracking catalyst for heavy hydrocarbon oils comprising a metallic element of the VIb Group and a metallic element of the VIII Group supported on a carrier containing a novel faujasite aluminosilicate which absorbs infrared in a frequency region of 3740.+-.10 cm.sup.-1 in an absorption percentage A of at least 20% and absorbs infrared in a frequency region of 3560.+-.10 cm.sup.-1 in an absorption percentage B of at least 5%, the ratio of A/B being at least 2, has a specific surface area of at least 650 m.sup.2 /g, has a framework SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 20 to 50, and has a lattice constant of from 24.15 to 24.50 .ANG.. The novel faujasite aluminosilicate is produced by treating a faujasite zeolite with an acid.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: August 18, 1992
    Assignee: Research Association for Residual Oil Processing
    Inventors: Ryuichiro Iwamoto, Ikusei Nakamura, Akira Iino