Yoshiki Yamaguchi

Ricoh Company: 115 patents #24 of 9,818Top 1%

Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%

HI Hitachi: 3 patents #10,712 of 28,497Top 40%

MM Mitsubishi Mining: 2 patents #467 of 2,247Top 25%

IBM: 1 patents #44,794 of 70,183Top 65%

HC Hirose Electric Co.: 1 patents #259 of 407Top 65%

TT The University Of Tokyo: 1 patents #1,000 of 2,633Top 40%

GL Glory: 1 patents #217 of 385Top 60%

Overall (All Time): #8,739 of 4,157,543Top 1%

127

Patents All Time

Issued Patents All Time

Showing 126–127 of 127 patents

Patent #	Title	Co-Inventors	Date
5196910	Semiconductor memory device with recessed array region	Noboru Moriuchi, Toshihiko Tanaka, Norio Hasegawa, Yoshifumi Kawamoto, Shin Kimura +2 more	1993-03-23
4882289	Method of making a semiconductor memory device with recessed array region	Noboru Moriuchi, Toshihiko Tanaka, Norio Hasegawa, Yoshifumi Kawamoto, Shin Kimura +2 more	1989-11-21