Hiroshi Matsunaga

MC Mitsubishi Gas Chemical Company: 20 patents #43 of 1,727Top 3%

Sumitomo Electric Industries: 10 patents #2,734 of 21,551Top 15%

Nintendo Co.: 9 patents #206 of 1,476Top 15%

AC Alps Electric Co.: 7 patents #261 of 2,177Top 15%

NT Ntn: 6 patents #253 of 1,364Top 20%

TE Teac: 5 patents #69 of 440Top 20%

KS Kawai Gakki Seisakusho: 4 patents #49 of 198Top 25%

Fujitsu Limited: 3 patents #8,614 of 24,456Top 40%

NC Nhk Spring Co.: 3 patents #263 of 1,116Top 25%

OC Osaka Organic Chemical Industry Co.: 2 patents #9 of 46Top 20%

TL Tokyo Electron Limited: 2 patents #2,602 of 5,567Top 50%

FC Furukawa Electric Co.: 2 patents #850 of 2,370Top 40%

PA Panasonic: 1 patents #13,264 of 21,108Top 65%

AI Anest Iwata: 1 patents #44 of 71Top 65%

FI Forestry And Forest Products Research Institute: 1 patents #5 of 53Top 10%

KC Kawai Musical Instruments Manufacturing Co.: 1 patents #20 of 50Top 40%

Kawasaki: 1 patents #1,551 of 2,943Top 55%

LP Lenovo (Singapore) Pte.: 1 patents #697 of 1,301Top 55%

Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%

NJ National Space Development Agency Of Japan: 1 patents #12 of 103Top 15%

NI Ngk Insulators: 1 patents #1,271 of 2,083Top 65%

NC Nkk Co.: 1 patents #579 of 1,173Top 50%

ND Ntt Docomo: 1 patents #1,030 of 1,706Top 65%

UN Unitechno: 1 patents #6 of 14Top 45%

📍 Yokkaichi, JP: #21 of 2,072 inventorsTop 2%

Overall (All Time): #23,092 of 4,157,543Top 1%

Patents All Time

Issued Patents All Time

Showing 76–79 of 79 patents

Patent #	Title	Co-Inventors	Date
4617460	Optical fiber sensor having shaped ends	Ichiro Tokunaga, Yoji Shimojima	1986-10-14
4606223	Device for detecting rotating speed of thin shape motor	Yoji Shimojima, Ichiro Tokunaga, Kosei Obata, Yukihiko Yasuhara	1986-08-19
4580871	Rotary encoder	Yoji Shimojima, Ichiro Tokunaga, Kosei Obata	1986-04-08
4580130	Rotary encoder	Ichiro Tokunaga, Yoji Shimojima	1986-04-01