Patents by Inventor Hidekazu Kusama

Hidekazu Kusama 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).

  • Housing having electromagnetic wave shielding and waterproof structure
    Patent number: 6822161
    Abstract: In a housing having a sealing structure providing an electromagnetic wave shielding function and a waterproof function between first and second housing components (1, 2) which define a space therebetween, the sealing structure includes a groove portion (12) made in the first housing component to extend around the space, a first seal member (13) formed by being directly applied into the groove portion, a second seal member (14) formed by being applied onto the first seal member, and a pressing portion (16) formed on the second housing component to correspond to the groove portion. The first seal member has relatively low hardness to be compressible. The second seal member has relatively high hardness, flexibility, and conductivity. When the first and second housing component are combined to each other, the pressing portion pressingly deforms the second seal member so as to be brought into surface contact with the second seal member. The first and second housing component are made of magnetic metal.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: November 23, 2004
    Assignees: NEC Corporation, Mitsuya Co., Ltd.
    Inventors: Kazuo Komatsu, Hidekazu Kusama
  • HOUSING HAVING ELECTROMAGNETIC WAVE SHIELDING AND WATERPROOF STRUCTURE
    Publication number: 20040188120
    Abstract: In a housing having a sealing structure providing an electromagnetic wave shielding function and a waterproof function between first and second housing components (1, 2) which define a space therebetween, the sealing structure includes a groove portion (12) made in the first housing component to extend around the space, a first seal member (13) formed by being directly applied into the groove portion, a second seal member (14) formed by being applied onto the first seal member, and a pressing portion (16) formed on the second housing component to correspond to the groove portion. The first seal member has relatively low hardness to be compressible. The second seal member has relatively high hardness, flexibility, and conductivity. When the first and second housing component are combined to each other, the pressing portion pressingly deforms the second seal member so as to be brought into surface contact with the second seal member. The first and second housing component are made of magnetic metal.
    Type: Application
    Filed: November 5, 2003
    Publication date: September 30, 2004
    Applicant: NEC Corporation and Mitsuya Co., Ltd.
    Inventors: Kazuo Komatsu, Hidekazu Kusama