Growing community of inventors

Tokyo, Japan

Madoka Nakayama

Average Co-Inventor Count = 4.61

ph-index = 3

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 = 80

Madoka NakayamaKenji Tosaki (2 patents)Madoka NakayamaAtsunori Himoto (2 patents)Madoka NakayamaKoji Tsuchiya (2 patents)Madoka NakayamaMiyuki Yasuoka (2 patents)Madoka NakayamaFujio Nobata (1 patent)Madoka NakayamaYoshiyuki Endo (1 patent)Madoka NakayamaNamiko Masaki (1 patent)Madoka NakayamaMadoka Nakayama (3 patents)Kenji TosakiKenji Tosaki (18 patents)Atsunori HimotoAtsunori Himoto (10 patents)Koji TsuchiyaKoji Tsuchiya (7 patents)Miyuki YasuokaMiyuki Yasuoka (4 patents)Fujio NobataFujio Nobata (19 patents)Yoshiyuki EndoYoshiyuki Endo (2 patents)Namiko MasakiNamiko Masaki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sega Enterprises, Ltd. (2 from 264 patents)

2. Kabushiki Kaisah Sega Enterprises (1 from 1 patent)


3 patents:

1. 6786826 - Memory device, controller, and electronic device

2. 6656049 - Electronic game apparatus

3. 6478679 - Memory device, controller and electronic device

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as of
12/9/2025
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