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

Jiro Kato — 48 Patents

SESeiko Epson: 38 patents #330 of 7,774Top 5%
Mazda Motor: 7 patents #532 of 4,755Top 15%
HCHogy Medical Co.: 2 patents #6 of 26Top 25%
KUKyoto University: 1 patents #568 of 1,688Top 35%
KUKyushu University, National University: 1 patents #221 of 767Top 30%
Overall (All Time): #57,892 of 4,157,543Top 2%
48 Patents All Time

Issued Patents All Time

Showing 26–48 of 48 patents

Patent #TitleCo-InventorsDate
8727510 Liquid ejection head and liquid ejection apparatus Eiju Hirai, Shiro Yazaki, Koji Sumi, Motoki Takabe, Hiroshi Ito +4 more 2014-05-20
8721055 Liquid-ejecting head, liquid-ejecting apparatus, and piezoelectric device Toshihiro Shimizu, Hiroshi Ito, Eiju Hirai 2014-05-13
8636341 Liquid ejecting head and liquid ejecting apparatus Hiromu Miyazawa, Hiroshi Ito, Toshihiro Shimizu 2014-01-28
8573751 Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus Koichi Morozumi, Toshiki Hara, Satoshi Denda 2013-11-05
8567919 Piezoelectric element, piezoelectric actuator, liquid ejecting head, and liquid ejecting apparatus Koichi Morozumi, Toshiki Hara, Satoshi Denda 2013-10-29
8550602 Liquid ejecting head and liquid ejecting apparatus Hiroshi Ito, Yasumi Ikehara, Hiroyuki Tomimatsu 2013-10-08
8534802 Liquid ejecting head, liquid ejecting apparatus and actuator device Hiromu Miyazawa, Hiroshi Ito, Koichi Morozumi 2013-09-17
8491104 Liquid-ejecting head, liquid-ejecting apparatus, and piezoelectric transducer Koichi Morozumi, Satoshi Denda, Ichiro ASAOKA 2013-07-23
8491101 Liquid ejecting head and liquid ejecting apparatus Satoshi Denda, Yoko Miyazawa 2013-07-23
8459783 Liquid ejecting head and liquid ejecting apparatus Eiju Hirai, Hiroshi Ito, Toshihiro Shimizu 2013-06-11
8461747 Liquid ejecting head, liquid ejecting apparatus, and actuator device Hiromu Miyazawa 2013-06-11
8459782 Liquid ejecting head, liquid ejecting apparatus, and piezoelectric element Ichiro ASAOKA 2013-06-11
8449084 Liquid ejection head and liquid ejection apparatus Hiromu Miyazawa, Hiroshi Ito 2013-05-28
8376527 Liquid ejecting head and liquid ejecting apparatus Toshiki Hara, Hiroaki Tamura, Satoshi Denda, Koichi Morozumi 2013-02-19
8262202 Liquid ejecting head, liquid ejecting apparatus and piezoelectric element Koichi Morozumi, Satoshi Denda, Ichiro ASAOKA 2012-09-11
8262203 Liquid ejecting head and liquid ejecting apparatus Eiju Hirai, Hiroshi Ito, Toshihiro Shimizu 2012-09-11
8210662 Liquid-ejecting head, liquid-ejecting apparatus and actuator device Hiromu Miyazawa, Hiroshi Ito, Koichi Morozumi 2012-07-03
8141991 Liquid ejecting head, liquid ejecting apparatus, and piezoelectric actuator Satoshi Denda, Ichiro ASAOKA 2012-03-27
8083330 Liquid-ejecting head, liquid-ejecting apparatus, and piezoelectric transducer Koichi Morozumi, Satoshi Denda, Ichiro ASAOKA 2011-12-27
8079677 Liquid ejecting head, liquid ejecting apparatus, and piezoelectric actuator Koichi Morozumi, Satoshi Denda, Ichiro ASAOKA 2011-12-20
8080924 Liquid ejecting head, liquid ejecting apparatus, and actuator device Hiromu Miyazawa 2011-12-20
7992973 Liquid ejecting head, liquid ejecting apparatus, and piezoelectric element Koichi Morozumi, Satoshi Denda, Ichiro ASAOKA 2011-08-09
7950782 Droplet discharging head, energy converter, piezoelectric device, MEMS structure, cantilever actuator, piezoelectric sensor, and piezoelectric linear motor 2011-05-31