Patents by Inventor Takaya Kawakami

Takaya Kawakami 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).

  • Fluorescent dental porcelain
    Patent number: 4158641
    Abstract: A porcelain dental composition for artificial teeth which includes an aluminum silicate, alkali or alkaline earth aluminosilicate or an alkali or alkaline earth aluminate fluorescent material and an activator including europium.
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: June 19, 1979
    Assignee: Shofu Dental Manufacturing Co., Ltd.
    Inventors: Kozo Miyai, Narishige Suzuki, Takaya Kawakami, Ikuo Kuze
  • Gas detecting sensor
    Patent number: 3955929
    Abstract: Gas detecting sensor made of SnO.sub.2 characterized by containing less than 5% by weight of at least one of Al.sub.2 O.sub.3, ZnO, SrO and BaO and less than 1% by weight of chlorine. The gas detecting sensor has a high sensitivity selectively to carbon monoxide but has a low sensitivity to hydrocarbon gases.
    Type: Grant
    Filed: October 18, 1974
    Date of Patent: May 11, 1976
    Assignee: Nichicon Capacitor Limited
    Inventors: Takaya Kawakami, Toshinori Kitamura, Nobuyuki Yamaji