Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
HE

Hirokazu Ejiri — 22 Patents

Sony: 22 patents #1,830 of 25,231Top 8%
Yokohama, JP: #4,539 of 49,234 inventorsTop 10%
Overall (All Time): #189,202 of 4,157,543Top 5%
22 Patents All Time
Hirokazu Ejiri has been granted 22 US patents while listed as an inventor at Sony. The first was granted in 1996 and the most recent in August 2025. Hirokazu Ejiri ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list Hirokazu Ejiri in Yokohama, JP.

Patents per Year

Patents granted per year, 1996 to 2025Bar chart with a peak of 3 patents in 2004.peak 31996: 1 patents19961997: 1 patents1999: 2 patents19992001: 1 patents2003: 2 patents20032004: 3 patents2005: 1 patents20052006: 1 patents2007: 1 patents20072010: 1 patents2016: 1 patents20162020: 1 patents2021: 2 patents20212023: 1 patents2024: 1 patents20242025: 2 patents2025

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12396279 Solid-state image pickup apparatus and electronic equipment Hiroaki Ammo, Akiko Honjo 2025-08-19
12262129 Solid-state imaging device and electronic apparatus including two floating diffusion regions 2025-03-25
RE50035 Semiconductor device Hideki Mori, Kenji Azami, Terukazu Ohno, Nobuyuki Yoshitake 2024-07-09
11804500 Solid-state image pickup apparatus and electronic equipment Hiroaki Ammo, Akiko Honjo 2023-10-31 $968,000
11121158 Solid-state image pickup apparatus and electronic equipment Hiroaki Ammo, Akiko Honjo 2021-09-14 $1,725,000
11069801 Semiconductor device, electronic apparatus, and method of manufacturing semiconductor device 2021-07-20 $969,000
10841521 Information processing device, information processing method, and program Koichi Baba, Taiichiro Watanabe 2020-11-17 $1,031,000
9368539 Semiconductor device with atom diffusion barrier layer and method of manufacturing semiconductor device with atom diffusion barrier layer Koichi Baba, Masaaki Bairo 2016-06-14 $573,000
7781861 Semiconductor device Hideki Mori, Kenji Azami, Terukazu Ohno, Nobuyuki Yoshitake 2010-08-24 $274,000
7192826 Semiconductor device and process for fabrication thereof Shigeru Kanematsu 2007-03-20 $1,053,000
7101750 Semiconductor device for integrated injection logic cell and process for fabricating the same 2006-09-05 $723,000
6919615 Semiconductor device for integrated injection logic cell and process for fabricating the same 2005-07-19 $654,000
6815222 Method for protecting capacitive elements during production of a semiconductor device 2004-11-09 $482,000
6791160 Semiconductor device and process for fabrication thereof Shigeru Kanematsu 2004-09-14 $752,000
6770974 Semiconductor device and its manufacturing method 2004-08-03 $588,000
6610603 Method of manufacturing a capacitor 2003-08-26 $650,000
6525401 Semiconductor device for integrated injection logic cell and process for fabricating the same 2003-02-25 $365,000
6278143 Semiconductor device with bipolar and J-FET transistors 2001-08-21 $626,000
6005284 Semiconductor device and its manufacturing method Hiroyuki Miwa, Hiroaki Ammo 1999-12-21 $1,397,000
5856228 Manufacturing method for making bipolar device having double polysilicon structure Hiroyuki Miwa, Shigeru Kanematsu, Takayuki Gomi, Hiroaki Anmo, Takashi Noguchi +2 more 1999-01-05 $611,000
5643806 Manufacturing method for making bipolar device Hiroyuki Miwa, Shigeru Kanematsu, Takayuki Gomi, Hiroaki Anmo, Takashi Noguchi +2 more 1997-07-01 $271,000
5541124 Method for making bipolar transistor having double polysilicon structure Hiroyuki Miwa, Shigeru Kanematsu, Takayuki Gomi, Hiroaki Anmo, Takashi Noguchi +2 more 1996-07-30 $143,000