Growing community of inventors

Kanagawa, Japan

Sayo Matsubara

Average Co-Inventor Count = 5.00

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 = 50

Sayo Matsubara ↔ Takaya Nagamine (3 patents)Sayo Matsubara ↔ Stefan Wennerström (3 patents)Sayo Matsubara ↔ Naoto Nakamura (3 patents)Sayo Matsubara ↔ Kiyotaka Kakemizu (2 patents)Sayo Matsubara ↔ Takashi Nara (1 patent)Sayo MatsubaraSayo Matsubara (3 patents)Takaya NagamineTakaya Nagamine (9 patents)Stefan WennerströmStefan Wennerström (8 patents)Naoto NakamuraNaoto Nakamura (6 patents)Kiyotaka KakemizuKiyotaka Kakemizu (2 patents)Takashi NaraTakashi Nara (11 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Audio-technica Corporation (3 from 217 patents)


3 patents:

1. D894151 - Headphone

2. D893450 - Headphone

3. D893451 - Headphone

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as of
1/3/2026
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