Growing community of inventors

Hitachi, Japan

Yasunori Kotaka

Average Co-Inventor Count = 10.00

ph-index = 2

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 = 51

Yasunori KotakaYukiji Iwase (2 patents)Yasunori KotakaKoichi Umezawa (2 patents)Yasunori KotakaSusumu Sato (2 patents)Yasunori KotakaHirofumi Tanaka (2 patents)Yasunori KotakaNaruhiko Suzuki (2 patents)Yasunori KotakaYasuyuki Hiruta (2 patents)Yasunori KotakaShoji Hayashi (2 patents)Yasunori KotakaNaofumi Kitagawa (2 patents)Yasunori KotakaKyouichi Kanno (2 patents)Yasunori KotakaYasunori Kotaka (2 patents)Yukiji IwaseYukiji Iwase (18 patents)Koichi UmezawaKoichi Umezawa (11 patents)Susumu SatoSusumu Sato (7 patents)Hirofumi TanakaHirofumi Tanaka (6 patents)Naruhiko SuzukiNaruhiko Suzuki (5 patents)Yasuyuki HirutaYasuyuki Hiruta (5 patents)Shoji HayashiShoji Hayashi (5 patents)Naofumi KitagawaNaofumi Kitagawa (2 patents)Kyouichi KannoKyouichi Kanno (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi Home and Life Solutions, Inc. (2 from 8 patents)


2 patents:

1. 7276099 - Electric vacuum cleaner

2. 7207083 - Electric vacuum cleaner

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as of
1/8/2026
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