RK

Ryoichi Kaiwa

Sumitomo Electric Industries: 9 patents #3,076 of 21,551Top 15%
Overall (All Time): #588,297 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
6490436 Battery pack removing device Tetsuo Hirabayashi, Tetsuya Kubo, Jun Sato 2002-12-03
6451474 Resiliently deformable battery pack Katsumi Kozu, Shigeru Kajiwara, Shoji Konishi, Takashi Takemura, Junji Fujiwara +1 more 2002-09-17
6204631 Interconnection structure between portable telephone and battery pack Tetsuo Hirabayashi 2001-03-20
5335367 Antenna retracting structure of portable radio Naotomo Adachi, Tetsuya Kubo, Michiyoshi Kudoh 1994-08-02
5327584 Portable radio having cover releasing mechanism and receive switch which are operable together Naotomo Adachi, Tetsuya Kubo, Michiyoshi Kudoh 1994-07-05
5046131 Portable radio transceiver apparatus Akira Takahashi, Naotomo Adachi 1991-09-03
4881258 Portable type mobile radio telephone Michiyoshi Kudo, Keiki Kobayashi, Yuichiro Suganuma, Naotomo Adachi 1989-11-14
4670633 Keyboard assembly with lighting Yuichiro Suganuma, Takeo Yasuho 1987-06-02
4609790 Locking apparatus for telephone Yuichiro Suganuma 1986-09-02