Patents by Inventor Jyun-Ichiro Yoshida

Jyun-Ichiro Yoshida 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).

  • Nonohmic ZnO ceramics including Bi.sub.2 O.sub.3, CoO, MnO, Sb.sub.2 O.sub. 3
    Patent number: 4147670
    Abstract: Nonohmic ZnO ceramics including the following additives have the voltage nonlinear exponent .alpha. of 30 or more, the dielectric constant .epsilon. of about 1000 or less, the loss factor (tan .delta.) of less than 10%, and small variations caused in the breakdown voltage V.sub.i by load and large current pulses. The additives listed by molecular formulae are given in % by mol. The glass components are given for Nos. 1 through 4 in % by weight, symbols of elements being representative of borosilicate lead and/or zinc glass.______________________________________ No. Bi.sub.2 O.sub.3 CoO MnO Sb.sub.2 O.sub.3 Glass Component ______________________________________ 1. 0.1-10 0.05-10 0.25-4 0.05-6 0.1-10 (Pb-Zn) 2. 0.1-6 0.05-10 0.25-10 0.1-10 0.1-10 (Zn) 3. 0.1-6 0.05-10 0.23-4 0.05-6 0.1-3 (Pb) 4. 0.1-6 0.05-10 0.2-10 0.1-6 0.1-10 (Zn and others) ______________________________________As a fifth embodiment, the oxides corresponding or equivalent to a lead-borosilicate glass (PbO, B.sub.2 O.sub.3 and SiO.sub.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: April 3, 1979
    Assignees: Nippon Electric Co., Ltd., Ohizumi Mfg. Co., Ltd.
    Inventors: Nobuaki Shohata, Tomeji Ohno, Shigeru Ikeda, Takaki Fukushima, Ryuji Igarashi, Jyun-Ichiro Yoshida