Patents by Inventor Toshiyuki Tsukao

Toshiyuki Tsukao 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).

  • Exhaust gas filter
    Patent number: 4464185
    Abstract: An exhaust gas filter is formed of ceramic honeycomb structure and provided with large number of passages defined by porous thin separator walls. The passages are composed of exhaust gas inlet passages and outlet passages which are alternately arranged. The honeycomb structure is further provided with exhaust gas blowing passages through which one part of exhaust gases entering into the inlet passages is discharged, without passing through minute pores of the porous thin separator walls, resulting in reducing the pressure loss of the exhaust gases.
    Type: Grant
    Filed: March 3, 1982
    Date of Patent: August 7, 1984
    Assignee: Nippon Soken, Inc.
    Inventors: Masahiro Tomita, Toshiyuki Tsukao