YY

Yukio Yokoyama

NE Nec: 15 patents #768 of 14,502Top 6%
Canon: 11 patents #5,840 of 19,416Top 35%
DC Daiichi Pharmaceutical Co.: 8 patents #13 of 399Top 4%
NK Nippon Carbide Kogyo: 1 patents #50 of 105Top 50%
NT NTT: 1 patents #2,911 of 4,871Top 60%
TC Tanaka Kogyo Co.: 1 patents #3 of 14Top 25%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
Overall (All Time): #86,935 of 4,157,543Top 3%
38
Patents All Time

Issued Patents All Time

Showing 26–38 of 38 patents

Patent #TitleCo-InventorsDate
5493311 Two-frequency impedance matching circuit for an antenna Ryoh Itoh, Takao Ono 1996-02-20
5455595 Antenna for portable radio communication apparatus Kazuo Sekiya, Kenji Takamoro 1995-10-03
5438339 Antenna for a radio communication apparatus Ryoh Itoh, Takao Ono 1995-08-01
5394160 Portable radio with coplanar ground and atenna conductive films formed on the inner surface of the case Hiroyuki Iwasaki 1995-02-28
5375256 Broadband radio transceiver Hiroyuki Iwasaki 1994-12-20
5148181 Mobile radio communication apparatus Takao Ono 1992-09-15
5053943 Control circuit for autonomous counters of a plurality of CPU's or the like with intermittent operation and reset after a predetermined count 1991-10-01
5042031 Double loop communications control system Tatsuki Ichihashi 1991-08-20
4887476 Small engine provided with self starting motor 1989-12-19
4791423 Shorted microstrip antenna with multiple ground planes Yoshio Ebine, Toshio Ito 1988-12-13
4680553 Intermediate frequency amplifier with signal strength detection circuit Katsuji Kimura, Yoshihiko Kasai, Koji Yamasaki, Toshifumi Sato 1987-07-14
4644361 Combination microstrip and unipole antenna 1987-02-17
4641366 Portable radio communication apparatus comprising an antenna member for a broad-band signal Katsuji Kimura, Naohisa Goto 1987-02-03