Growing community of inventors

Kokubunji, Japan

Haruo Yokoyama

Average Co-Inventor Count = 7.00

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 = 1

Haruo Yokoyama ↔ Hirotsugu Oishibashi (1 patent)Haruo Yokoyama ↔ Muneyuki Ohara (1 patent)Haruo Yokoyama ↔ Kosuke Nagai (1 patent)Haruo Yokoyama ↔ Hideshi Miyazaki (1 patent)Haruo Yokoyama ↔ Kosuke Nagai (1 patent)Haruo Yokoyama ↔ Akihiro Hosokawa (1 patent)Haruo Yokoyama ↔ Soji Fujimori (1 patent)Haruo Yokoyama ↔ Akihiro Hosokawa (1 patent)Haruo Yokoyama ↔ Hideshi Miyazaki (1 patent)Haruo YokoyamaHaruo Yokoyama (1 patent)Hirotsugu OishibashiHirotsugu Oishibashi (7 patents)Muneyuki OharaMuneyuki Ohara (6 patents)Kosuke NagaiKosuke Nagai (2 patents)Hideshi MiyazakiHideshi Miyazaki (1 patent)Kosuke NagaiKosuke Nagai (1 patent)Akihiro HosokawaAkihiro Hosokawa (1 patent)Soji FujimoriSoji Fujimori (1 patent)Akihiro HosokawaAkihiro Hosokawa (1 patent)Hideshi MiyazakiHideshi Miyazaki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Railway Technical Research Institute (1 from 65 patents)

2. Sumitomo Metal Technology Inc. (1 from 1 patent)

3. Sumikin Osaka Plant Engineering Co., Ltd. (1 from 1 patent)


1 patent:

1. 5303514 - Rail grinding apparatus

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as of
12/17/2025
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