Growing community of inventors

Tsukuba, Japan

Hirohito Ohhata

Average Co-Inventor Count = 7.14

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 = 430

Hirohito OhhataNaoki Fukutomi (5 patents)Hirohito OhhataYoshiaki Tsubomatsu (5 patents)Hirohito OhhataToshio Yamazaki (5 patents)Hirohito OhhataHiroshi Nomura (4 patents)Hirohito OhhataFumio Inoue (4 patents)Hirohito OhhataShinsuke Hagiwara (4 patents)Hirohito OhhataNoriyuki Taguchi (4 patents)Hirohito OhhataMasahiko Itabashi (1 patent)Hirohito OhhataHirohito Ohhata (5 patents)Naoki FukutomiNaoki Fukutomi (17 patents)Yoshiaki TsubomatsuYoshiaki Tsubomatsu (14 patents)Toshio YamazakiToshio Yamazaki (11 patents)Hiroshi NomuraHiroshi Nomura (40 patents)Fumio InoueFumio Inoue (31 patents)Shinsuke HagiwaraShinsuke Hagiwara (20 patents)Noriyuki TaguchiNoriyuki Taguchi (7 patents)Masahiko ItabashiMasahiko Itabashi (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi Chemical Company, Ltd. (4 from 1,641 patents)

2. Other (1 from 832,843 patents)


5 patents:

1. 7187072 - Fabrication process of semiconductor package and semiconductor package

2. 6746897 - Fabrication process of semiconductor package and semiconductor package

3. 6365432 - Fabrication process of semiconductor package and semiconductor package

4. 5976912 - Fabrication process of semiconductor package and semiconductor package

5. 5504992 - Fabrication process of wiring board

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as of
12/28/2025
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