Patents by Inventor Tsumoru Okada

Tsumoru Okada 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).

  • Filter element
    Patent number: 6926750
    Abstract: A filter element comprises an oil-impregnated filtering member, and a transmission preventing layer formed on a downstream side of the filtering member, for restricting transmission of at least the carbon dusts from the oil-impregnated filtering member. The filtering member may be formed like a ridge-like-folded structure. The transmission preventing layer may be formed of a coating layer having a resistance against a viscous oil that is impregnated in the filtering member. This coating layer may be formed uniformly as a whole or the thickness or the content of the coating layer may be increased partially. A ventilation shutting-off member (filling layer) may be formed as the transmission preventing layer in the root portion areas of the ridge portions. The transmission preventing layer may comprise a resistant component that is insoluble in the oil that is impregnated in the filtering member.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: August 9, 2005
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Tigers Polymer Corporation
    Inventors: Seiichi Tanaka, Akira Terasaki, Tatsuya Sagano, Hideyo Uehara, Hiroto Koura, Tsumoru Okada, Shinsuke Mizuta, Takatsugu Miura
  • Filter element
    Patent number: 6818037
    Abstract: A filter element is made of a first filtering member, and a second filtering member that is arranged on a downstream side of the first filtering member and is impregnated with an oil. The first filtering member consists of a downstream wet layer that is impregnated with the oil, which is transferred by contact to the second filtering member, and an upstream dry layer that is not impregnated with the oil. A density of the first filtering member may be set smaller than that of the second filtering member.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: November 16, 2004
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Tigers Polymer Corporation
    Inventors: Seiichi Tanaka, Kazutaka Yokoyama, Hiroto Koura, Tsumoru Okada, Shinsuke Mizuta
  • Filter element
    Publication number: 20030150199
    Abstract: A filter element comprises an oil-impregnated filtering member, and a transmission preventing layer formed on a downstream side of the filtering member, for restricting transmission of at least the carbon dusts from the oil-impregnated filtering member. The filtering member may be formed like a ridge-like-folded structure. The transmission preventing layer may be formed of a coating layer having a resistance against a viscous oil that is impregnated in the filtering member. This coating layer may be formed uniformly as a whole or the thickness or the content of the coating layer may be increased partially. A ventilation shutting-off member (filling layer) may be formed as the transmission preventing layer in the root portion areas of the ridge portions. The transmission preventing layer may comprise a resistant component that is insoluble in the oil that is impregnated in the filtering member.
    Type: Application
    Filed: February 7, 2003
    Publication date: August 14, 2003
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Seiichi Tanaka, Akira Terasaki, Tatsuya Sagano, Hideyo Uehara, Hiroto Koura, Tsumoru Okada, Shinsuke Mizuta, Takatsugu Miura
  • Filter element
    Publication number: 20030106293
    Abstract: A filter element is made of a first filtering member, and a second filtering member that is arranged on a downstream side of the first filtering member and is impregnated with an oil. The first filtering member consists of a downstream wet layer that is impregnated with the oil, which is transferred by contact to the second filtering member, and an upstream dry layer that is not impregnated with the oil. A density of the first filtering member may be set smaller than that of the second filtering member.
    Type: Application
    Filed: November 25, 2002
    Publication date: June 12, 2003
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Seiichi Tanaka, Kazutaka Yokoyama, Hiroto Koura, Tsumoru Okada, Shinsuke Mizuta