KA

Keikichi Ando

HI Hitachi: 10 patents #4,206 of 28,497Top 15%
HM Hitachi Maxell: 4 patents #247 of 1,211Top 25%
HC Hitachi Cable: 1 patents #530 of 1,086Top 50%
Overall (All Time): #523,428 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6954941 Information recording medium and information recording device Makoto Miyamoto, Junko Ushiyama, Yumiko Anzai, Akemi Hirotsune, Motoyasu Terao +3 more 2005-10-11
6806030 Information recording medium and method for manufacturing information recording medium Motoyasu Terao, Makoto Miyamoto, Yasushi Miyauchi, Yumiko Anzai, Junko Ushiyama +3 more 2004-10-19
6636477 Information recording medium and information recording device Makoto Miyamoto, Junko Ushiyama, Yumiko Anzai, Akemi Hirotsune, Motoyasu Terao +3 more 2003-10-21
6383595 Information recording medium Akemi Hirotsune, Motoyasu Terao, Makoto Miyamoto, Yasushi Miyauchi, Tetsuya Nishida +5 more 2002-05-07
5404348 Method for recording and reproducing information using at least two energy beams Motoyasu Terao, Kunikazu Ohnishi, Tesuya Nishida, Hiroshi Yasuoka, Norio Ohta +3 more 1995-04-04
4581579 Optical magnetic-field measuring apparatus having improved temperature characteristics Kazuyuki Nagatsuma, Hiroyoshi Matsumura, Tsuneo Suganuma, Norio Ohta, Yuzuru Hosoe +1 more 1986-04-08
4532180 Garnet film for ion-implanted magnetic bubble device Norio Ohta, Yuzuru Hosoe, Yutaka Sugita, Fumihiko Ishida 1985-07-30
4397912 Garnet film for magnetic bubble element Norio Ohta, Yuzuru Hosoe, Yutaka Sugita 1983-08-09
4338372 Garnet film for magnetic bubble device Norio Ohta, Fumihiko Ishida, Tadashi Ikeda, Yutaka Sugita 1982-07-06
4267230 Film for a magnetic bubble domain device Norio Ohta, Fumihiko Ishida, Tadashi Ikeda, Yutaka Sugita 1981-05-12