Hiroshi Ishihara

Aisin Seiki Kabushiki Kaisha: 11 patents #268 of 3,782Top 8%

EC Eisai R&D Management Co.: 9 patents #56 of 817Top 7%

Sharp Kabushiki Kaisha: 8 patents #2,076 of 10,731Top 20%

TT Tokyo Institute Of Technology: 4 patents #94 of 1,159Top 9%

Ricoh Company: 4 patents #4,167 of 9,818Top 45%

MI Mitsubishi Cable Industries: 3 patents #69 of 372Top 20%

HI Hitachi: 2 patents #13,388 of 28,497Top 50%

DI Drug Delivery System Institute: 2 patents #8 of 35Top 25%

Honda Motor Co.: 2 patents #8,527 of 21,052Top 45%

ME Mercian: 2 patents #34 of 110Top 35%

Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%

SU Subaru: 1 patents #677 of 1,436Top 50%

FL Fujitsu Microelectronics Limited: 1 patents #212 of 624Top 35%

DC Daido Metal Company: 1 patents #166 of 280Top 60%

SO Softbank: 1 patents #59 of 194Top 35%

Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%

📍 Tsukuba, JP: #29 of 2,818 inventorsTop 2%

Overall (All Time): #52,332 of 4,157,543Top 2%

Patents All Time

Issued Patents All Time

Showing 51–51 of 51 patents

Patent #	Title	Co-Inventors	Date
4565584	Method of producing single crystal film utilizing a two-step heat treatment	Masao Tamura, Makoto Ohkura, Masanobu Miyao, Nobuyoshi Natsuaki, Naotsugu Yoshihiro +1 more	1986-01-21