Growing community of inventors

Hirakata, Japan

Takamichi Nakagawa

Average Co-Inventor Count = 2.14

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 = 26

Takamichi NakagawaShuichi Obata (1 patent)Takamichi NakagawaMasahiko Umekawa (1 patent)Takamichi NakagawaTadashi Maeoka (1 patent)Takamichi NakagawaShogo Nakata (1 patent)Takamichi NakagawaGenichi Yamada (1 patent)Takamichi NakagawaTadashi Hanai (1 patent)Takamichi NakagawaKouji Fujita (1 patent)Takamichi NakagawaYoshihiro Fujimoto (1 patent)Takamichi NakagawaTakaaki Kumazawa (1 patent)Takamichi NakagawaKo Hamano (1 patent)Takamichi NakagawaTakamichi Nakagawa (4 patents)Shuichi ObataShuichi Obata (11 patents)Masahiko UmekawaMasahiko Umekawa (6 patents)Tadashi MaeokaTadashi Maeoka (5 patents)Shogo NakataShogo Nakata (4 patents)Genichi YamadaGenichi Yamada (3 patents)Tadashi HanaiTadashi Hanai (3 patents)Kouji FujitaKouji Fujita (3 patents)Yoshihiro FujimotoYoshihiro Fujimoto (3 patents)Takaaki KumazawaTakaaki Kumazawa (2 patents)Ko HamanoKo Hamano (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Matsushita Electric Industrial Co., Ltd. (3 from 27,375 patents)

2. Hosiden Corporation (1 from 776 patents)

3. Kyoto Tool Co., Ltd. (1 from 7 patents)


4 patents:

1. 7832286 - Torque wrench

2. 6704495 - Audio-video device reproducing apparatus

3. D261882 - Record player

4. 4039194 - Automatic record player

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12/16/2025
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