Growing community of inventors

Kyoto, Japan

Kei Kumabayashi

Average Co-Inventor Count = 4.36

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 = 0

Kei Kumabayashi ↔ Akihiko Miyazaki (2 patents)Kei Kumabayashi ↔ Kenta Ogi (2 patents)Kei Kumabayashi ↔ Taro Yamafuku (1 patent)Kei Kumabayashi ↔ Masaki Masuda (1 patent)Kei Kumabayashi ↔ Shota Ito (1 patent)Kei Kumabayashi ↔ Fumiya Nakano (1 patent)Kei Kumabayashi ↔ Ryosuke Shimokawa (1 patent)Kei KumabayashiKei Kumabayashi (2 patents)Akihiko MiyazakiAkihiko Miyazaki (29 patents)Kenta OgiKenta Ogi (2 patents)Taro YamafukuTaro Yamafuku (16 patents)Masaki MasudaMasaki Masuda (8 patents)Shota ItoShota Ito (6 patents)Fumiya NakanoFumiya Nakano (6 patents)Ryosuke ShimokawaRyosuke Shimokawa (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Gs Yuasa International Ltd. (2 from 722 patents)


2 patents:

1. 12381223 - Energy storage device

2. 12100838 - Energy storage device and method for manufacturing energy storage device

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1/8/2026
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