Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
JI

Junichi Ichikawa

FIFujifilm Business Innovation: 16 patents #536 of 5,238Top 15%
NCNippon Cmk: 12 patents #5 of 32Top 20%
Ricoh Company: 7 patents #2,977 of 9,818Top 35%
YAYazaki: 6 patents #746 of 3,427Top 25%
HCHitachi Powdered Metals Co.: 5 patents #24 of 246Top 10%
OLOlympus: 5 patents #926 of 3,097Top 30%
Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%
ULUsui Kokusai Sangyo Kaisha Limited: 3 patents #45 of 145Top 35%
Denso: 2 patents #4,986 of 11,792Top 45%
Honda Motor Co.: 2 patents #8,527 of 21,052Top 45%
Ngk Spark Plug Co.: 2 patents #703 of 1,594Top 45%
SCSchaeffler: 2 patents #768 of 2,365Top 35%
NTNtn: 1 patents #814 of 1,364Top 60%
HCHitachi Chemical Company: 1 patents #1,071 of 1,946Top 60%
UAUacj: 1 patents #113 of 238Top 50%
NCNkg Spark Plug Co.: 1 patents #1 of 15Top 7%
KIKabushikikaisha Piste Snow Industries: 1 patents #4 of 6Top 70%
OSOlympus Medical Systems: 1 patents #501 of 833Top 65%
Hino, JP: #2 of 13 inventorsTop 20%
Overall (All Time): #29,359 of 4,157,543Top 1%
70 Patents All Time

Issued Patents All Time

Showing 26–50 of 70 patents

Patent #TitleCo-InventorsDate
8635979 Drag lever Frank Himsel, Jochen Ott, Dirk Richter 2014-01-28
8437672 Separation unit, fixing unit and image forming apparatus Sho Watanabe, Junpei Amano, Aya Kakishima, Masaya Nakatsuhara 2013-05-07
8364068 Fixing device and image forming apparatus Junpei Amano, Aya Kakishima, Masaya Nakatsuhara, Sho Watanabe 2013-01-29
8315530 Fixing device and image forming device 2012-11-20
8211021 Ultrasound image processing apparatus and ultrasound diagnostic apparatus 2012-07-03
8162835 Ultrasonic image generating method Masahiro Takeda 2012-04-24
8145082 Image forming apparatus and method of controlling toner supply Satoshi Shigezaki 2012-03-27
8135442 Apparatus and program for vehicular wireless communication 2012-03-13
8019152 Color correction data acquiring system, image processing system, color correction data acquiring method, image processing method, and program Jungo Harigai, Kenji Ogi, Shinichi Ohashi, Kenji Hyoki 2011-09-13
7905018 Production method for sintered gear Tomoyuki Kohida, Kensuke Nakata, Tomoaki Arakawa 2011-03-15
7826771 Electrostatic latent image holder unit and image forming apparatus using the same Mitsuo Yamamoto, Katsuya Takenouchi, Yasutomo Ishii 2010-11-02
7783212 Thickness variation detector of photoconductor, image formation unit, image formation apparatus and method for thickness variation of photoconductor Kenji Ogi, Masao Ito, Tomoshi Hara, Kenji Hara, Yoshifumi Takebe 2010-08-24
7697779 Ultrasonic image processing apparatus Masayoshi Abe 2010-04-13
7651659 Manufacturing method of sinter forged aluminum parts with high strength Kenzo Morita 2010-01-26
7605949 Image processing apparatus and image processing method adapted to correct color unevenness Kazuhiko Arai, Kenji Hara, Yasuyuki Tanaka, Yoshiya Imoto, Akira Ishii 2009-10-20
7489884 Image forming apparatus, correction parameter setting device, and density non-uniformity correction device Hideki Kimura 2009-02-10
7382387 Image forming apparatus and image density correction device Yoshiki Matsuzaki 2008-06-03
7099645 Multilayer LC filter Tadashi Shingaki 2006-08-29
6833939 Light scanning method and light scanning device 2004-12-21
6831530 Monolithic LC filter with enhanced magnetic coupling between resonator inductors Tadashi Shingaki, Norihisa Kitajima 2004-12-14
6791435 Multilayer LC filter with improved magnetic coupling characteristics Tadashi Shingaki 2004-09-14
6607150 Method and apparatus for crushing material Tadao Izutsu, Yuichi Nagahara 2003-08-19
6201561 Optical scanner, scanning lens and image forming apparatus 2001-03-13
6172415 Thin plate member for semiconductor package and manufacturing method therefor Zenzo Ishijima, Hideo Shikata, Tamio Takada 2001-01-09
6139975 Sheet metal member, method of manufacturing same, and heat radiation plate Osamu Mawatari, Zenzo Ishijima, Hideo Shikata 2000-10-31