Growing community of inventors

Tokyo, Japan

Koji Izumi

Average Co-Inventor Count = 2.93

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 62

Koji IzumiMasanori Kishi (3 patents)Koji IzumiNoriaki Takagi (2 patents)Koji IzumiKohtaro Amano (2 patents)Koji IzumiTaku Yaegashi (2 patents)Koji IzumiYuichi Kaneda (2 patents)Koji IzumiYoshinori Sugiyama (2 patents)Koji IzumiJun Ishida (2 patents)Koji IzumiHiroshi Yamamoto (1 patent)Koji IzumiSatoshi Wada (1 patent)Koji IzumiShin Miyashita (1 patent)Koji IzumiNobuharu Murashima (1 patent)Koji IzumiKeisuke Ishii (1 patent)Koji IzumiRui Morisawa (1 patent)Koji IzumiKoichi Maeyama (1 patent)Koji IzumiKazuyoshi Yano (1 patent)Koji IzumiKentaro Fujii (1 patent)Koji IzumiTatsuya Nagai (1 patent)Koji IzumiShinsaku Hirano (1 patent)Koji IzumiHikaru Tanoue (1 patent)Koji IzumiTokusuke Tsujimoto (1 patent)Koji IzumiHideo Ohtani (1 patent)Koji IzumiKenichi Kawazoe (1 patent)Koji IzumiToshikazu Yamaoka (1 patent)Koji IzumiSeiji Yamaki (1 patent)Koji IzumiRyoji Okutsu (1 patent)Koji IzumiMasatoshi Sakamoto (1 patent)Koji IzumiHiroyuki Mami (1 patent)Koji IzumiYohei Mizukami (1 patent)Koji IzumiHideaki Kitazume (1 patent)Koji IzumiErika Ido (1 patent)Koji IzumiMasatoshi Sakamoto (0 patent)Koji IzumiYohei Mizukami (0 patent)Koji IzumiKoji Izumi (12 patents)Masanori KishiMasanori Kishi (5 patents)Noriaki TakagiNoriaki Takagi (68 patents)Kohtaro AmanoKohtaro Amano (15 patents)Taku YaegashiTaku Yaegashi (9 patents)Yuichi KanedaYuichi Kaneda (6 patents)Yoshinori SugiyamaYoshinori Sugiyama (4 patents)Jun IshidaJun Ishida (4 patents)Hiroshi YamamotoHiroshi Yamamoto (102 patents)Satoshi WadaSatoshi Wada (74 patents)Shin MiyashitaShin Miyashita (60 patents)Nobuharu MurashimaNobuharu Murashima (32 patents)Keisuke IshiiKeisuke Ishii (28 patents)Rui MorisawaRui Morisawa (27 patents)Koichi MaeyamaKoichi Maeyama (25 patents)Kazuyoshi YanoKazuyoshi Yano (15 patents)Kentaro FujiiKentaro Fujii (15 patents)Tatsuya NagaiTatsuya Nagai (10 patents)Shinsaku HiranoShinsaku Hirano (10 patents)Hikaru TanoueHikaru Tanoue (4 patents)Tokusuke TsujimotoTokusuke Tsujimoto (4 patents)Hideo OhtaniHideo Ohtani (4 patents)Kenichi KawazoeKenichi Kawazoe (2 patents)Toshikazu YamaokaToshikazu Yamaoka (2 patents)Seiji YamakiSeiji Yamaki (2 patents)Ryoji OkutsuRyoji Okutsu (1 patent)Masatoshi SakamotoMasatoshi Sakamoto (1 patent)Hiroyuki MamiHiroyuki Mami (1 patent)Yohei MizukamiYohei Mizukami (1 patent)Hideaki KitazumeHideaki Kitazume (1 patent)Erika IdoErika Ido (1 patent)Masatoshi SakamotoMasatoshi Sakamoto (0 patent)Yohei MizukamiYohei Mizukami (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sony Corporation (9 from 58,129 patents)

2. Fdk Corporation (2 from 206 patents)

3. Littelfuse Japan G.k. (2 from 13 patents)

4. Yamatake Corporation (1 from 180 patents)

5. Tyco Electronics Japan G.k. (276 patents)


12 patents:

1. D950625 - Video camera

2. 10788737 - Imaging device and camera grip, and imaging system

3. 10254633 - Imaging device and camera grip, and imaging system

4. 9935307 - Positive electrode lead and alkaline secondary battery

5. D810172 - Camera

6. 9728764 - Alkaline storage battery

7. D726238 - Camera

8. D651231 - Accessory for a camera

9. 7722263 - Imager apparatus

10. 7578627 - Imager apparatus

11. 6491227 - Erroneous insertion prevention mechanism

12. 6286550 - Valve apparatus

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12/9/2025
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