Growing community of inventors

Tokyo, Japan

Issei Isaka

Average Co-Inventor Count = 3.00

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 = 88

Issei IsakaRyoichi Wada (2 patents)Issei IsakaToshihiko Watanabe (1 patent)Issei IsakaKunio Katayanagi (1 patent)Issei IsakaIssei Isaka (2 patents)Ryoichi WadaRyoichi Wada (2 patents)Toshihiko WatanabeToshihiko Watanabe (23 patents)Kunio KatayanagiKunio Katayanagi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hirata Corporation (2 from 168 patents)


2 patents:

1. 8180483 - Overhead transfer/storage system and overhead transfer/storage method

2. 8006824 - Storage system and storage method

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as of
12/10/2025
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