Patents by Inventor Tomosuke Imamura

Tomosuke Imamura 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).

  • Pyrometer and a method for fusing an alumina pipe having a high purity
    Patent number: 5230565
    Abstract: An improved new type pyrometer and a method for fusing an alumina pipe having a high purity are disclosed. The temperature-measuring portion of the pyrometer includes a protective pipe made of alumina having a purity of at least 99.9% and a temperature-measuring resistance element of a platinum or platinum-rhodium resistance wire and a holding portion made of alumina having a purity of at least 99.9%. Owing to the use of high purity alumina, the platinum or platinum-rhodium resistance wire is not contaminated and has stable temperature characteristics at high temperatures. According to the method of this invention, an end of an alumina pipe having a purity of at least 99.9% can be fused without the aid of any binder by fusing the end while evacuating air from the alumina pipe through its opposite end.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: July 27, 1993
    Assignees: Netsushin Co., Ltd., Snow Brand Milk Products Co., Ltd.
    Inventors: Kazuichi Aoki, Yukihiro Saiki, Kensuke Itoh, Satoshi Nishimura, Tomosuke Imamura