Growing community of inventors

Kanagwa, Japan

Kunihiro Toyota

Average Co-Inventor Count = 8.00

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 = 6

Kunihiro Toyota ↔ Satoru Ando (1 patent)Kunihiro Toyota ↔ Nobuo Sekine (9 patents)Kunihiro Toyota ↔ Tatsuyuki Nakatani (1 patent)Kunihiro Toyota ↔ Takumi Kajiwara (1 patent)Kunihiro Toyota ↔ Keishi Okamoto (1 patent)Kunihiro Toyota ↔ Kouichi Takayama (1 patent)Kunihiro Toyota ↔ Hirotaka Masuda (1 patent)Kunihiro Toyota ↔ Yuki Nitta (1 patent)Kunihiro ToyotaKunihiro Toyota (1 patent)Satoru AndoSatoru Ando (27 patents)Nobuo SekineNobuo Sekine (9 patents)Tatsuyuki NakataniTatsuyuki Nakatani (8 patents)Takumi KajiwaraTakumi Kajiwara (6 patents)Keishi OkamotoKeishi Okamoto (6 patents)Kouichi TakayamaKouichi Takayama (4 patents)Hirotaka MasudaHirotaka Masuda (3 patents)Yuki NittaYuki Nitta (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Pilot Corporation (1 from 173 patents)

2. The Pilot Ink Co., Ltd. (175 patents)


1 patent:

1. 8430591 - Ballpoint pen tip and ballpoint pen

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as of
12/18/2025
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