Growing community of inventors

Hachioji, Japan

Junji Ishigaki

Average Co-Inventor Count = 1.67

ph-index = 5

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 = 87

Junji IshigakiHidehiko Shin (2 patents)Junji IshigakiToshihiro Hishida (2 patents)Junji IshigakiKeizaburo Sasaki (2 patents)Junji IshigakiSeiji Ura (2 patents)Junji IshigakiHiromi Wada (1 patent)Junji IshigakiMasaharu Nakatsuchi (1 patent)Junji IshigakiYoshifumi Yonemoto (1 patent)Junji IshigakiMasakazu Kawano (1 patent)Junji IshigakiEriko Ooseki (1 patent)Junji IshigakiJunji Ishigaki (6 patents)Hidehiko ShinHidehiko Shin (93 patents)Toshihiro HishidaToshihiro Hishida (12 patents)Keizaburo SasakiKeizaburo Sasaki (5 patents)Seiji UraSeiji Ura (3 patents)Hiromi WadaHiromi Wada (18 patents)Masaharu NakatsuchiMasaharu Nakatsuchi (16 patents)Yoshifumi YonemotoYoshifumi Yonemoto (10 patents)Masakazu KawanoMasakazu Kawano (4 patents)Eriko OosekiEriko Ooseki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Matsushita Electric Industrial Co., Ltd. (4 from 27,375 patents)

2. Other (2 from 832,680 patents)


6 patents:

1. 7403801 - Portable telephone with bookmark sort function

2. 7177665 - E-mail handling method for portable telephone and portable telephone using said handling method

3. 6799300 - Document processor

4. 6708200 - Communication system and communication method

5. 6678534 - Mobile telephone with back light function

6. 6580436 - Terminal device for mobile communication and screen display method performed by such device

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as of
12/7/2025
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