Growing community of inventors

Tokyo, Japan

Hidefumi Amagaya

Average Co-Inventor Count = 1.00

ph-index = 4

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 = 161

Hidefumi AmagayaHidefumi Amagaya (6 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Plus Corporation (6 from 80 patents)


6 patents:

1. D318070 - Multipurpose office-use article

2. D302102 - Multipurpose stationery tool

3. 4793537 - Rolled adhesive tape holder

4. 4791725 - Sheathed scissors

5. 4779785 - Portable stationery device

6. 4761094 - Device for combining pair of stationery components

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as of
1/3/2026
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