Ryu-ichi Oka

SC Sanyo Electric Co.: 1 patents #3,644 of 6,347Top 60%

AT Agency Of Industrial Science And Technology: 1 patents #568 of 1,778Top 35%

📍 Tsukuba, JP: #1,768 of 2,818 inventorsTop 65%

Overall (All Time): #3,868,905 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4989249	Method of feature determination and extraction and recognition of voice and apparatus therefore	Hiroshi Matsumura	1991-01-29