Patents by Inventor Minoru Koikeda

Minoru Koikeda 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).

  • Crystalline silicates, and processes for the production or use thereof
    Patent number: 4698449
    Abstract: This invention relates to a novel crystalline silicate useful as a catalyst for various organic reactions such as polymerization of organic compounds, alkylation, isomerization, disproportionation and the like, which has a chemical composition represented by the general formula in the terms of mole ratios of oxides under dehydrated state,(0.1-2)R.sub.2/n O. [aLa.sub.2 O.sub.3.bCe.sub.2 O.sub.3 ].ySiO.sub.2in which R is at least one mono- or divalent cation, n is the valence of R, M is at least one trivalent transition metal ion and/or aluminum ion, and a+b=1, a.gtoreq.0, b.gtoreq.0, and y.gtoreq.12.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: October 6, 1987
    Assignee: Research Association for Petroleum Alternatives Development
    Inventors: Tetsuya Imai, Hiroshi Fujita, Minoru Koikeda, Takashi Suzuki
  • Catalyst for the production of hydrocarbons from the synthesis gas
    Patent number: 4622308
    Abstract: An improved catalyst suitable for use in the production of hydrocarbons from the synthesis gas comprises an iron-containing Fischer-Tropsch catalyst, a zeolite and at least one metal selected from the group consisting of ruthenium, rhodium, platinum, palladium, iridium, cobalt and molybdenum. This catalyst gives a high CO conversion and hydrocarbons enriched with C.sub.5.sup.+ gasoline fraction.
    Type: Grant
    Filed: December 11, 1984
    Date of Patent: November 11, 1986
    Assignee: Research Association for Petroleum Alternatives Development
    Inventors: Minoru Koikeda, Takashi Suzuki, Koutaro Munemura, Yoshihiko Nishimoto, Tetsuya Imai