MM

Masao Murakawa

UN Unknown: 2 patents #12,644 of 83,584Top 20%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #1,258,075 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7022252 Permanent magnetic alloy and bonded magnet Mitsuaki Mochizuki, Michihisa Shimizu, Tsunehiro Kawata 2006-04-04
6637984 Heat absorbing throw-away tip and heat absorbing throw-away tool using the throw-away tip Masahiko Jin 2003-10-28
4770572 Press for manufacturing helical gears Kiyoyasu Ohkawa 1988-09-13
4282996 Method of continuous slitting of flat material and apparatus therefor Teizo Maeda 1981-08-11