Growing community of inventors

Ibaraki, Japan

Keiji Nakamura

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 = 0

Keiji Nakamura ↔ Akira Asada (1 patent)Keiji Nakamura ↔ Tadashi Sakata (1 patent)Keiji Nakamura ↔ Megumu Takai (1 patent)Keiji Nakamura ↔ Yoshifumi Sakamoto (1 patent)Keiji Nakamura ↔ Masanori Sugano (1 patent)Keiji NakamuraKeiji Nakamura (1 patent)Akira AsadaAkira Asada (4 patents)Tadashi SakataTadashi Sakata (4 patents)Megumu TakaiMegumu Takai (2 patents)Yoshifumi SakamotoYoshifumi Sakamoto (1 patent)Masanori SuganoMasanori Sugano (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi Maxell, Limited (1 from 1,112 patents)


1 patent:

1. 6521376 - Non-aqueous liquid electrolyte cell

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as of
1/5/2026
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