Patents by Inventor Naoko Sakatani

Naoko Sakatani 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).

  • Hydrocarbon adsorbent for exhaust gas cleaning, exhaust gas cleaning catalyst and exhaust gas cleaning device
    Patent number: 5744103
    Abstract: In order to adsorb effectively various kind of hydrocarbons each having a different size 6, a zeolite having a larger pore 8, a zeolite having a smaller pore 6 and a zeolite having an in-between pores 7 are present together very closely located very closely to one another by means of, for example, physically mixing them.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: April 28, 1998
    Assignee: Mazda Motor Corporation
    Inventors: Hiroshi Yamada, Toshitsugu Ueoka, Akihide Takami, Naoko Sakatani
  • Catalyst for exhaust gas purification
    Patent number: 5494878
    Abstract: A three-way catalyst is generally used in an automotive exhaust system. This catalyst has a sufficient total content of noble metal active species and is prevented from heat deterioration so that the activity of the noble metal active species can be well utilized at low temperatures to enable the catalyst to exhibit improved purification performance at the low temperatures. The catalyst comprises a first catalyst layer formed on the surface of a honeycomb-shaped carrier and containing Pd (palladium) and alumina (.gamma.-Al.sub.2 O.sub.3), and a second catalyst layer formed on the outer surface of the first catalyst layer and containing Pd and ceria (CeO.sub.2).
    Type: Grant
    Filed: January 27, 1994
    Date of Patent: February 27, 1996
    Assignee: Mazda Motor Corporation
    Inventors: Hiroshi Murakami, Yasuto Watanabe, Naoko Sakatani, Masayuki Koishi