Hiroyuki Hamada

Sumitomo Electric Industries: 13 patents #1,957 of 21,551Top 10%

JC Jms Co.: 7 patents #6 of 184Top 4%

MK Murata Kikai: 6 patents #56 of 454Top 15%

DI Daikin Industries: 5 patents #682 of 2,957Top 25%

TK Toyo Boseki Kabushiki Kaisha: 3 patents #234 of 1,085Top 25%

NT National University Corporation Kyoto Institute Of Technology: 3 patents #9 of 151Top 6%

Pioneer: 3 patents #574 of 1,730Top 35%

Pioneer Electronic: 3 patents #611 of 1,840Top 35%

NK Nippon Hoso Kyokai: 2 patents #182 of 703Top 30%

DA Daikyonishikawa: 2 patents #8 of 85Top 10%

NE Nec: 2 patents #5,510 of 14,502Top 40%

SC Sumitomo Chemical: 1 patents #2,469 of 4,033Top 65%

JA Japan Science And Technology Agency: 1 patents #756 of 2,171Top 35%

MC Mitsubishi Gas Chemical Company: 1 patents #1,048 of 1,727Top 65%

Mazda Motor: 1 patents #2,563 of 4,755Top 55%

SS Sumitomo Wiring Systems: 1 patents #1,603 of 2,615Top 65%

OC Odawara Engineering Co.: 1 patents #10 of 25Top 40%

The Yokohama Rubber Co.: 1 patents #666 of 1,136Top 60%

Overall (All Time): #47,106 of 4,157,543Top 2%

Patents All Time

Issued Patents All Time

Showing 51–54 of 54 patents

Patent #	Title	Co-Inventors	Date
5264259	Energy absorbing structure	Hajime Satoh, Hiroshi Hirakawa	1993-11-23
5233136	Horn loadspeaker	—	1993-08-03
4230768	Laminated light-polarizing sheet	Rinjiro Ichikawa, Hajime Suzuki	1980-10-28
4229498	Light-polarizing film	Hajime Suzuki, Rinjiro Ichikawa	1980-10-21