Patents by Inventor Atuhiko Imai

Atuhiko Imai 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).

  • Metal honeycomb body for exhaust gas purification catalyst and method for producing the same
    Patent number: 6689328
    Abstract: In order to improve solid phase diffusion bondability at contact portions between a metal flat foil and a metal corrugated foil together constituting a metal honeycomb body for a catalyst converter used for purifying an exhaust gas and to improve engine durability, the present invention comprises one or combination of the following structures; a structure wherein at least one of the metal foils has a foil thickness of less than 40 &mgr;m; a structure wherein an Al content after bonding is at least 3%; a structure wherein the surface condition of both metal foils in a width-wise direction has a predetermined surface coarseness or a predetermined surface shape and condition; and a structure wherein the width of contact portions between both metal foils is at least five times the thickness of the metal foils.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: February 10, 2004
    Assignee: Nippon Steel Corporation
    Inventors: Tadayuki Otani, Atuhiko Imai, Masayuki Kasuya, Kazutoshi Iwami, Toru Utsumi, Mikio Yamanaka, Hitoshi Ohta, Yoshikuni Tokunaga, Fujio Shimizu, Toshihiro Egami, Tamio Noda