Growing community of inventors

Vercelli, Italy

Hayato Ishii

Average Co-Inventor Count = 3.36

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 = 4

Hayato Ishii ↔ Futoshi Kozato (3 patents)Hayato Ishii ↔ Takahiro Fukuyama (1 patent)Hayato Ishii ↔ Yusuke Meiwa (1 patent)Hayato Ishii ↔ Massimiliano Di Girolami (1 patent)Hayato Ishii ↔ Nanahiko Mio (1 patent)Hayato Ishii ↔ Takuro Hayashi (1 patent)Hayato Ishii ↔ Masamichi Yamagata (1 patent)Hayato Ishii ↔ Futoshi Kozato (0 patent)Hayato Ishii ↔ Engelhardt Dirk (0 patent)Hayato Ishii ↔ Reinke Gunther (0 patent)Hayato Ishii ↔ Saito Tsutomu (0 patent)Hayato Ishii ↔ Hirofumi Tanikoshi (0 patent)Hayato Ishii ↔ Masahiro Kusayama (0 patent)Hayato Ishii ↔ Futoshi Kozato (0 patent)Hayato IshiiHayato Ishii (3 patents)Futoshi KozatoFutoshi Kozato (9 patents)Takahiro FukuyamaTakahiro Fukuyama (8 patents)Yusuke MeiwaYusuke Meiwa (6 patents)Massimiliano Di GirolamiMassimiliano Di Girolami (6 patents)Nanahiko MioNanahiko Mio (6 patents)Takuro HayashiTakuro Hayashi (1 patent)Masamichi YamagataMasamichi Yamagata (1 patent)Futoshi KozatoFutoshi Kozato (0 patent)Engelhardt DirkEngelhardt Dirk (0 patent)Reinke GuntherReinke Gunther (0 patent)Saito TsutomuSaito Tsutomu (0 patent)Hirofumi TanikoshiHirofumi Tanikoshi (0 patent)Masahiro KusayamaMasahiro Kusayama (0 patent)Futoshi KozatoFutoshi Kozato (0 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Ykk Corporation (3 from 1,442 patents)


3 patents:

1. 9781981 - Stop for a slide fastener, and a method for the manufacture thereof

2. D728421 - Chain for slide fastener

3. 8418326 - Metallic one-side teeth and two-way slide fastener

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12/10/2025
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