KW

Katsuyuki Watanabe

HI Hitachi: 20 patents #1,757 of 28,497Top 7%
MA Maxell: 15 patents #37 of 437Top 9%
HS Hitachi Video And Information Systems: 2 patents #78 of 269Top 30%
ME Meidensha: 1 patents #255 of 555Top 50%
Overall (All Time): #93,474 of 4,157,543Top 3%
36
Patents All Time

Issued Patents All Time

Showing 26–36 of 36 patents

Patent #TitleCo-InventorsDate
6272285 Digital/analog compatible video tape recorder Hiroya Abe, Hideo Nishijima, Hiroyuki Torii, Kouji Kaniwa, Toshio Nakamoto 2001-08-07
6263151 Recording/reproducing apparatus and reproducing apparatus Hideo Nishijima, Shoji Ohno, Kouji Minabe 2001-07-17
6215948 Magnetic recording/reproducing apparatus and the same equipped with an image sensor Hideo Nishijima, Koichi Ono, Akihito Nishizawa, Kazuaki Hori 2001-04-10
6008616 Pole change induction motor and control apparatus and method for the same Kazutoshi Nagayama, Tadashi Ashikaga, Takayuki Mizuno, Kenji Yamada, Masato Mori +1 more 1999-12-28
5978546 Digital/analog compatible video tape recorder Hiroya Abe, Hideo Nishijima, Hiroyuki Torii, Kouji Kaniwa, Toshio Nakamoto 1999-11-02
5231479 Luminance/chrominance signal separation circuit having filter circuit using pulse patterns suppressing circuit Hitoaki Owashi, Kooji Minabe, Koichi Ono, Kenji Ichige, Hiroto Yamauchi 1993-07-27
5138505 Tracking apparatus for a magnetic recording and playback apparatus with independent control of audio head with respect to video head Hideo Nishijima, Kaneyuki Okamoto, Tomishige Yatsugi 1992-08-11
5047866 Comb filter type luminance/chrominance signal separation circuit Tomomitsu Kuroyanagi, Atsushi Yoshioka, Michio Masuda, Toshiro Aizawa 1991-09-10
4786986 Magnetic recording and reproducing apparatus Fumihiko Yamanushi, Atsushi Yoshioka, Michio Masuda, Kuniaki Miura 1988-11-22
4740847 Magnetic recording/reproducing apparatus Shinji Ozaki, Yoshizumi Watatani 1988-04-26
4613912 Recording and reproducing apparatus for a video tape recorder Akira Shibata, Atsushi Yoshioka 1986-09-23