Patents by Inventor Katsuaki Tamaru

Katsuaki Tamaru 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).

  • Patent number: 6762976
    Abstract: There is disposed a middle comprising a metallic inner middle (20) in which a movement (30) is housed, and a metallic outer middle (21) covering at least a part of the inner middle, and an elastic shock absorber (35) disposed between the inner middle and the outer middle.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: July 13, 2004
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Katsuaki Tamaru, Ryo Fujita, Susumu Tosaka
  • Patent number: 6538959
    Abstract: An indicating plate for a timepiece is provided which is so structured as to prevent viewing of the solar cell and other items arranged thereunder through the indicating plate, which permits the same design expression as realized by the conventional metallic indicating plate and extensively increases a design variation inclusive of a ton (delicate hue) and pattern with superior-quality appearance and which has an excellent appearance quality to thereby ensure and enhance commercial value. The indicating plate for the timepiece is a timepiece indicating plate arranged on the front surface side of a solar cell housed in a timepiece. The timepiece indicating plate comprises a resin substrate through which light can be transmitted and metallic thin film layer coating formed on at least one side of the resin substrate by dry plating.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: March 25, 2003
    Assignees: Citizen Watch Co., Ltd., Yamamoto Mfg. Co., Ltd.
    Inventors: Katsuyuki Yamaguchi, Katsuaki Tamaru, Hiroshi Ikebuchi