Growing community of inventors

Tokyo, Japan

Tetsuya Joja

Average Co-Inventor Count = 1.50

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 = 24

Tetsuya JojaHideya Nishikawa (1 patent)Tetsuya JojaYuji Yamane (1 patent)Tetsuya JojaTetsuya Joja (2 patents)Hideya NishikawaHideya Nishikawa (14 patents)Yuji YamaneYuji Yamane (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tomy Company, Ltd. (1 from 577 patents)

2. Tomy Kogyo Co., Ltd. (1 from 376 patents)


2 patents:

1. 5310377 - Illuminated sound producing toy

2. 4938730 - Toy house with magnetically actuated light

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as of
1/15/2026
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