HI

Hirokazu Iwata

Ricoh Company: 34 patents #505 of 9,818Top 6%
NC Nihon Dempa Kogyo Co.: 10 patents #30 of 296Top 15%
TC Toyo Communication Equipment Co.: 5 patents #3 of 111Top 3%
Brother Kogyo: 1 patents #2,155 of 2,767Top 80%
OU Osaka University: 1 patents #681 of 1,984Top 35%
II Icom Incorporated: 1 patents #40 of 74Top 55%
JA Japan Atomic Energy Agency: 1 patents #64 of 251Top 30%
📍 Rifu, JP: #38 of 2,101 inventorsTop 2%
Overall (All Time): #52,533 of 4,157,543Top 2%
51
Patents All Time

Issued Patents All Time

Showing 26–50 of 51 patents

Patent #TitleCo-InventorsDate
8475593 Crystal preparing device, crystal preparing method, and crystal Seiji Sarayama, Akihiro Fuse 2013-07-02
8337798 Crystal producing apparatus, crystal producing method, substrate producing method, gallium nitride crystal, and gallium nitride substrate Seiji Sarayama 2012-12-25
8337617 Manufacturing method and manufacturing apparatus of a group III nitride crystal Seiji Sarayama, Minoru Fukuda, Tetsuya Takahashi, Akira Takahashi 2012-12-25
8323404 Group III nitride crystal and manufacturing method thereof Seiji Sarayama, Akihiro Fuse 2012-12-04
8194266 Positional error detection method and apparatus, and computer-readable storage medium Tatsuya Miyadera, Kenji Asuwa, Izumi Kinoshita, Hiroaki Ikeda, Tatsuya Ozaki +1 more 2012-06-05
8101020 Crystal growth apparatus and manufacturing method of group III nitride crystal Seiji Sarayama, Akihiro Fuse 2012-01-24
7981213 Group III nitride crystal, crystal growth process and crystal growth apparatus of group III nitride Seiji Sarayama 2011-07-19
7828896 Methods of growing a group III nitride crystal Seiji Sarayama, Hisanori Yamane, Masahiko Shimada, Masato Aoki 2010-11-09
7718002 Crystal manufacturing apparatus Seiji Sarayama 2010-05-18
7531038 Crystal growth method Seiji Sarayama, Hisanori Yamane, Masahiko Shimada, Masafumi Kumano, Takashi Araki 2009-05-12
7508003 Production of a GaN bulk crystal substrate and a semiconductor device formed thereon Seiji Sarayama, Masahiko Shimada, Hisanori Yamane 2009-03-24
7462238 Crystal growth apparatus and method of producing a crystal Seiji Sarayama, Akihiro Fuse, Kuniaki Ara, Junichi Saito 2008-12-09
7261775 Methods of growing a group III nitride crystal Seiji Sarayama, Hisanori Yamane, Masahiko Shimada, Masato Aoki 2007-08-28
7250640 Production of a GaN bulk crystal substrate and a semiconductor device formed on a GaN bulk crystal substrate Seiji Sarayama, Masahiko Shimada, Hisanori Yamane 2007-07-31
7235913 Piezoelectric substrate, piezoelectric resonating element and surface-mount piezoelectric oscillator 2007-06-26
7220311 Group III nitride crystal, crystal growth process and crystal growth apparatus of group III nitride Seiji Sarayama 2007-05-22
7098574 Piezoelectric resonator and method for manufacturing the same 2006-08-29
7038359 Piezoelectric resonator and the method for making the same 2006-05-02
7012353 Piezoelectric resonator and the method for making the same 2006-03-14
7001457 Crystal growth method, crystal growth apparatus, group-III nitride crystal and group-III nitride semiconductor device Seiji Sarayama, Hisanori Yamane, Masahiko Shimada, Masafumi Kumano, Takashi Araki 2006-02-21
6949140 Crystal growth method, crystal growth apparatus, group-III nitride crystal and group-III nitride semiconductor device Seiji Sarayama, Masahiko Shimada, Hisanori Yamane, Masato Aoki 2005-09-27
6750593 High frequency piezoelectric resonator having reduced spurious modes 2004-06-15
6592663 Production of a GaN bulk crystal substrate and a semiconductor device formed on a GaN bulk crystal substrate Seiji Sarayama, Masahiko Shimada, Hisanori Yamane 2003-07-15
6294033 Lamination apparatus and sheet roll for use in lamination apparatus Mutsuo Fukuoka 2001-09-25
5684523 Optical line printhead and an LED chip used therefor Shunichi Satoh, Takashi Takahashi, Hiroyuki Iechi, Tomoaki Yoshida, Chizuru Yoshida, legal representative +1 more 1997-11-04