Growing community of inventors

Hitachi, Japan

Ryuji Kiyokawa

Average Co-Inventor Count = 8.00

ph-index = 1

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 = 52

Ryuji KiyokawaKenji Baba (1 patent)Ryuji KiyokawaYasuo Morooka (1 patent)Ryuji KiyokawaTakayoshi Yokota (1 patent)Ryuji KiyokawaJunzo Kawakami (1 patent)Ryuji KiyokawaNobuhiro Hamada (1 patent)Ryuji KiyokawaKazunori Takahashi (1 patent)Ryuji KiyokawaMasao Takato (1 patent)Ryuji KiyokawaRyuji Kiyokawa (1 patent)Kenji BabaKenji Baba (63 patents)Yasuo MorookaYasuo Morooka (63 patents)Takayoshi YokotaTakayoshi Yokota (23 patents)Junzo KawakamiJunzo Kawakami (18 patents)Nobuhiro HamadaNobuhiro Hamada (14 patents)Kazunori TakahashiKazunori Takahashi (11 patents)Masao TakatoMasao Takato (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,517 patents)


1 patent:

1. 5335180 - Method and apparatus for controlling moving body and facilities

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/10/2026
Loading…