MM

Mitsunori Matsumura

SO Sony: 12 patents #3,691 of 25,231Top 15%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
Overall (All Time): #425,630 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
7469785 Storage case Morihiro Murata, Ippei Suzuki 2008-12-30
7284254 Disk cartridge and disk recording medium device having shutter members Manabu Obata, Yuji Iwaki, Mitsuyoshi Kawaguchi 2007-10-16
7237247 Disc cartridge having deeper concave portion continuous with shutter opener/closer groove Hironori Okazawa, Teruyuki Takizawa, Yoshito Saji, Kuniko Nakata, Manabu Obata +1 more 2007-06-26
7222351 Shutter closing mechanism and disc driving apparatus Hideaki Tsutsumi, Manabu Obata, Zensaku Mitsuji 2007-05-22
7137129 Disk drive apparatus Manabu Obata, Zensaku Mitsuji, Hideaki Tsutsumi, Hisashi Negoro 2006-11-14
6964056 Disk type recording and reproducing device Manabu Obata, Yoichiro Mitsumoto, Hideaki Tsutsumi 2005-11-08
6839900 Disk cartridge, a method of manufacturing same, and a recording/reproducing system Manabu Obata 2005-01-04
6728199 Disk cartridge Manabu Obata 2004-04-27
5999358 Recording and/or reproducing apparatus having tape travel direction control arrangement which prevents tape slippage and slack generation Toshinari Koguchi, Toshiyuki Yamazaki 1999-12-07
5991128 Recording and/or reproducing apparatus having tape travel direction control arrangement which prevents tape slippage and slack generation Toshinari Koguchi, Toshiyuki Yamazaki 1999-11-23
5689385 Recording and/or reproducing apparatus having tape travel direction control arrangement which prevents tape slippage and slack generation Toshinari Koguchi, Toshiyuki Yamazaki 1997-11-18
5438466 Recording and/or reproducing apparatus tape having traveling reversal arrangement which attenuates tape slippage and slack generation Toshinari Koguchi, Toshiyuki Yamazaki 1995-08-01