Tokyo, Japan

Hiroyuki Matsukawa

Average Co-Inventor Count = 1.94

ph-index = 25

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 = 1,395

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Inventor’s number of patents

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Strength of working relationships

Company Filing History:

1. Tomy Company, Ltd. (69 from 576 patents)

2. Fuji Photo Film Company, Limited (6 from 16,458 patents)

3. Takara Co., Ltd. (5 from 329 patents)

4. Xenoid Protodesign Co., Ltd. (2 from 2 patents)

80 patents:

1. D1101868 - Accessory for spinning top toy

2. D1096975 - Accessory for spinning top toy

3. D1094576 - Accessory for spinning top toy

4. D1094575 - Accessory for spinning top toy

5. D1094577 - Accessory for spinning top toy

6. D1092631 - Winder of launching apparatus for spinning top toy

7. D1091717 - Accessory for spinning top toy

8. D1091721 - Grip of launching apparatus for spinning top toy

9. D1091719 - Winder of launching apparatus for spinning top toy

10. D1068951 - Accessory for spinning top toy

11. D1068955 - Spinning top toy

12. D1064099 - Grip of launching apparatus for spinning top toy

13. D1046991 - Launching apparatus for spinning top toy

14. D1017716 - Accessory for spinning top toy

15. D1016925 - Accessory for spinning top toy

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idiyas.com
as of
12/10/2025

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