Growing community of inventors

Tsuchiura, Japan

Akio Okubo

Average Co-Inventor Count = 6.00

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 = 13

Akio Okubo ↔ Takahiko Shimizu (1 patent)Akio Okubo ↔ Hishao Fukui (1 patent)Akio Okubo ↔ Tadashi Kohno (1 patent)Akio Okubo ↔ Noriaki Masuda (1 patent)Akio Okubo ↔ Kenji Takahashi (1 patent)Akio OkuboAkio Okubo (1 patent)Takahiko ShimizuTakahiko Shimizu (11 patents)Hishao FukuiHishao Fukui (3 patents)Tadashi KohnoTadashi Kohno (2 patents)Noriaki MasudaNoriaki Masuda (1 patent)Kenji TakahashiKenji Takahashi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pentel Kabushiki Kaisha (1 from 264 patents)


1 patent:

1. 4364684 - Writing instrument

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
12/13/2025
Loading…