Growing community of inventors

Omuta, Japan

Hiroyuki Hara

Average Co-Inventor Count = 4.00

ph-index = 3

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 = 84

Hiroyuki Hara ↔ Takashi Kawasaki (2 patents)Hiroyuki Hara ↔ Hiroshi Nishikawa (2 patents)Hiroyuki Hara ↔ Yukio Kuroda (2 patents)Hiroyuki Hara ↔ Toshikatsu Mitsunaga (1 patent)Hiroyuki Hara ↔ Kazuyoshi Tsuruta (1 patent)Hiroyuki Hara ↔ Yoshiteru Yamasaki (1 patent)Hiroyuki HaraHiroyuki Hara (3 patents)Takashi KawasakiTakashi Kawasaki (85 patents)Hiroshi NishikawaHiroshi Nishikawa (6 patents)Yukio KurodaYukio Kuroda (2 patents)Toshikatsu MitsunagaToshikatsu Mitsunaga (7 patents)Kazuyoshi TsurutaKazuyoshi Tsuruta (3 patents)Yoshiteru YamasakiYoshiteru Yamasaki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Denki Kagaku Kogyo Kabushiki Kaisha (3 from 475 patents)


3 patents:

1. 6403697 - Carbon black, method for its preparation and its applications

2. 6096671 - Method of using hexagonal system boron nitride powder

3. 5854155 - Hexagonal system boron nitride powder

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as of
12/13/2025
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