Patents by Inventor Kyoji Fujiwara

Kyoji Fujiwara 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).

  • Sound absorbing structure
    Patent number: 6568135
    Abstract: A sound absorbing structure including a sound absorbing member, an air layer, and a resonant sound absorbing structure. The air layer is formed in the rear of the sound absorbing member. The resonant sound absorbing structure includes a slit and is formed in the rear of the sound absorbing member. The sound absorbing member is a surface plate covering the rear air layer and the resonant sound absorbing structure, and the sound absorbing member is shaped in one of a plate and plane.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: May 27, 2003
    Assignees: Nichias Corporation, Alumu Corporation, Yotsumoto Acoustic Design Inc.
    Inventors: Yoshiaki Yokoyama, Shinji Migita, Shinichi Okuzono, Kyoji Fujiwara, Takuya Fujimoto, Yukio Hattori
  • Sound absorbing body, sound absorbing board, and sound absorbing unit
    Patent number: 6035965
    Abstract: To provide a sound absorbing structure having a superior sound absorbing characteristic and an external appearance of the sound absorbing structure which does not cause flicker or the like, by disposal, for example, in the front of an air chamber, a plurality of ribs (2a) are disposed on one surface of the sound absorbing board body (2), and a plurality of through-holes (3) are provided in basal portions (2b) between the ribs (2a) to form a porous structure. Concealing materials (5) are provided between the ribs (2a) of the sound absorbing board body to conceal the through-holes (3), respectively.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: March 14, 2000
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Kyoji Fujiwara, Shinta Yamamura, Naoyuki Furuta, Tadanori Mizukami, Yutaka Tasaki, Takashi Mikami
  • Sound absorbing body, sound absorbing plate, and sound absorbing unit
    Patent number: 5854453
    Abstract: To provide a sound absorbing structure having a superior sound absorbing characteristic and an external appearance of the sound absorbing structure which does not cause flicker or the like, by disposal, for example, in the front of an air chamber, a plurality of ribs (2a) are disposed on one surface of the sound absorbing board body (2), and a plurality of through-holes (3) are provided in basal portions (2b) between the ribs (2a) to form a porous structure. Concealing materials (5) are provided between the ribs (2a) of the sound absorbing board body to conceal the through-holes (3), respectively.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: December 29, 1998
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Kyoji Fujiwara, Shinta Yamamura, Naoyuki Furuta, Tadanori Mizukami, Yutaka Tasaki, Takashi Mikami
  • Light transmissive sound absorbing member
    Patent number: 5532440
    Abstract: In the sound absorbing member, partition members each formed of sound absorbing material are disposed between first and second light transmissive sheet members to thereby form a plurality of small spaces, and first and second through holes are formed in the first and second sheet members, respectively, in such a manner that the first through holes communicate with other small spaces than the small spaces in communication with the second through holes.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: July 2, 1996
    Assignee: Nitto Boseki Co., Ltd.
    Inventor: Kyoji Fujiwara