Growing community of inventors

Tokyo, Japan

Pen-Hao Ma

Average Co-Inventor Count = 3.00

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 = 19

Pen-Hao MaKazuhisa Kondo (2 patents)Pen-Hao MaYoshiaki Abe (1 patent)Pen-Hao MaWataru Sakuma (1 patent)Pen-Hao MaPen-Hao Ma (2 patents)Kazuhisa KondoKazuhisa Kondo (42 patents)Yoshiaki AbeYoshiaki Abe (14 patents)Wataru SakumaWataru Sakuma (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Audio Technica (2 from 405 patents)


2 patents:

1. 8692102 - Pickup cable for stringed instrument

2. D623172 - Microphone

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as of
12/16/2025
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