Growing community of inventors

Tokyo, Japan

Hideaki Irisawa

Average Co-Inventor Count = 1.00

ph-index = 3

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 = 22

Hideaki IrisawaTomohito Nagai (1 patent)Hideaki IrisawaHideaki Irisawa (4 patents)Tomohito NagaiTomohito Nagai (5 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Sanriki Kogyo Kabushiki Kaisha (3 from 4 patents)

2. Tomy Company, Ltd. (1 from 576 patents)


4 patents:

1. D1099225 - Toy figure

2. 8307676 - Openable and closable two-pronged body holding device

3. 7287874 - Portable signal light, vehicle guidance tool and vehicle guidance method

4. 6431354 - Picture frame type cover for disk storage case

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as of
12/20/2025
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