Patents by Inventor Toshihiro Tomita

Toshihiro Tomita 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).

  • HIGHLY HEAT RESISTANT BETA- ZEOLITE AND ABSORBENT FOR AUTOMOBILE EXHAUST GAS PURIFICATION AND ADSORBENT FOR AUTOMOBILE EXHAUST GAS PURIFICAT
    Publication number: 20010008624
    Abstract: A highly heat-resistant and hydrothermal-resistant &bgr;-zeolite having a SiO2/Al2O3 ratio of 80 or more, which is constituted by primary particles having an average particle diameter of 30 nm or more or by primary particles having such a particle size distribution that the 10% particle diameter is 20 nm or more; and an adsorbent for automobile exhaust gas purification, using said &bgr;-zeolite. The &bgr;-zeolite and the adsorbent can be produced reliably so as to have quaranteed properties.
    Type: Application
    Filed: November 6, 1998
    Publication date: July 19, 2001
    Inventors: AKIRA TAKAHASHI, TOSHIHIRO TOMITA, TAKUYA HIRAMATSU, KENJI SUZUKI, MASAHIKO MATSUKATA