YI

Yohei Ishikawa

MC Murata Manufacturing Co.: 53 patents #49 of 5,295Top 1%
DC Dowa Electronics Materials Co.: 3 patents #68 of 241Top 30%
DC Dowa Ip Creation Co.: 3 patents #2 of 26Top 8%
HC Hitachi Chemical Company: 1 patents #1,071 of 1,946Top 60%
Overall (All Time): #40,000 of 4,157,543Top 1%
59
Patents All Time

Issued Patents All Time

Showing 51–59 of 59 patents

Patent #TitleCo-InventorsDate
5920243 Multi-layer thin-film electrode, for a high-frequency transmission line, resonator, and filter Seiji Hidaka, Norifumi Matsui, Tomoyuki Ise 1999-07-06
5920245 Nonradiative dielectric line apparatus including a specifically oriented circuit board Toru Tanizaki, Hiroshi Nishida, Sadao Yamashita, Atsushi Saitoh 1999-07-06
5900847 Dielectric lens apparatus Hideaki Yamada, Kazutaka Higashi, Yasuaki Saitoh 1999-05-04
5889297 High frequency semiconductor device with slots Koichi Sakamoto 1999-03-30
5872485 Dielectric line waveguide which forms electronic circuits Koichi Sakamoto, Sadao Yamashita, Takehisa Kajikawa 1999-02-16
5867120 Transmitter-receiver Toru Tanizaki, Hiroshi Nishida 1999-02-02
5786740 Dielectric resonator capable of varying resonant frequency Toshiro Hiratsuka, Sadao Yamashita, Kenichi Iio 1998-07-28
5770989 Nonradiative dielectric line apparatus and instrument for measuring characteristics of a circuit board Toru Tanizaki, Hiroshi Nishida, Sadao Yamashita, Atsushi Saitoh 1998-06-23
5764116 Dielectric resonator and filter utilizing a nonradiative dielectric waveguide device Toshiro Hiratsuka, Kenichi Iio, Sadao Yamashita 1998-06-09