Patents by Inventor Atushi Okajima

Atushi Okajima 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).

  • Porous ceramic monoliths
    Patent number: 4695301
    Abstract: A porous ceramic monolith for use as a filter (1) for Diesel exhaust gases has inlet bores (61) closed at an outlet end (8) of the filter (1) and outlet bores (62) closed at an inlet end (7) of the filter. The inlet and outlet bores (61 and 62) are interlaced with each other and separated from each other by porous partition walls (3) each having gas-permeable pores therein. The inlet and outlet bores have open ends (9) diverged axialy outwardly of the bores to increase opening ratio in each end of the filter (1) thereby decreasing the pressure loss across the filter.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: September 22, 1987
    Assignee: Nippondenso Co., Ltd.
    Inventors: Atushi Okajima, Hitoshi Yoshida, Yukihisa Takeuchi, Masanori Fukutani