HT

Hiroyoshi Takagi

HM Hitachi Maxell: 10 patents #74 of 1,211Top 7%
AT Agency Of Industrial Science And Technology: 4 patents #91 of 1,778Top 6%
NI Nissan Chemical Industries: 3 patents #343 of 1,150Top 30%
OC Olympus Optical Co.: 2 patents #1,178 of 2,334Top 55%
MS Maxell Seiki: 2 patents #3 of 14Top 25%
SC Sanyo Electric Co.: 2 patents #2,557 of 6,347Top 45%
MI Ministry Of International Trade & Industry: 1 patents #189 of 582Top 35%
TO Tosoh: 1 patents #576 of 1,042Top 60%
Overall (All Time): #355,791 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7027385 Optical disk, disk substrate, and drive Katsusuke Shimazaki, Yuuji Yamazaki, Hikaru Mizutani, Tsuyoshi Maro, Kenji Ohta +1 more 2006-04-11
6687216 Cartridge in which disk is stored Hiroshi Nakashima, Noriaki Kitani, Takao Enomoto, Hikaru Mizutani, Kenji Ohta +1 more 2004-02-03
6191366 Board for IC card having component mounting recess Masayoshi Onishi, Seiji Kegai, Koichi Ozaki, Kaname Tamada 2001-02-20
D435854 Disc cartridge Hikaru Mizutani, Kenji Ohta, Noriaki Kitani, Takao Enomoto, Hiroshi Nakashima +2 more 2001-01-02
5725819 Injection molding method for board for IC card Masayoshi Onishi, Seiji Kegai, Koichi Ozaki, Kaname Tamada 1998-03-10
5338713 Sintered body of alumina and partially stabilized zirconia, a process for making the same and a method of preparing a powder for sintering Masanobu Awano, Yuzi Hoshi 1994-08-16
5177033 Sintered body of light transmitting cordierite and a method of preparing the same Masanobu Awano, Michihide Machida, Yuzi Hoshi, Masamichi Obitsu 1993-01-05
5002912 Oxide sintered product Masanobu Awano, Yoshitaka Kubota, Yuzi Hoshi 1991-03-26
4741496 Tape cartridge Hikaru Mizutani, Toshiyuki Amaike, Harutaka Hayashi 1988-05-03
4556153 Magnetic recording tape cartridge Toshiyuki Amaike, Hikaru Mizutani 1985-12-03
4553717 Recording tape cartridge 1985-11-19
4463918 Magnetic recording tape cartridge 1984-08-07
4447020 Magnetic recording tape cartridge Mitsuharu Toi 1984-05-08
4367292 Method for manufacture of powder composition for cordierite Shiro Sano 1983-01-04