Growing community of inventors

Tokyo, Japan

Donghai Piao

Average Co-Inventor Count = 7.11

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 = 13

Donghai Piao ↔ Kazuyuki Fujita (9 patents)Donghai Piao ↔ Tatsuya Chigusa (9 patents)Donghai Piao ↔ Yoshihiko Moriyama (7 patents)Donghai Piao ↔ Takayuki Sode (7 patents)Donghai Piao ↔ Takumi Ozawa (6 patents)Donghai Piao ↔ Shohei Fujikado (6 patents)Donghai Piao ↔ Hikaru Wakamatsu (6 patents)Donghai Piao ↔ Takuma Hachisu (3 patents)Donghai PiaoDonghai Piao (9 patents)Kazuyuki FujitaKazuyuki Fujita (9 patents)Tatsuya ChigusaTatsuya Chigusa (9 patents)Yoshihiko MoriyamaYoshihiko Moriyama (21 patents)Takayuki SodeTakayuki Sode (17 patents)Takumi OzawaTakumi Ozawa (6 patents)Shohei FujikadoShohei Fujikado (6 patents)Hikaru WakamatsuHikaru Wakamatsu (6 patents)Takuma HachisuTakuma Hachisu (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Light Metal Company, Ltd. (9 from 306 patents)

2. Soode Nagano Co., Ltd. (9 from 16 patents)


9 patents:

1. D1104949 - Battery case

2. D1103107 - Battery case

3. D1091451 - Battery case

4. D1091452 - Battery case

5. D1091453 - Battery case

6. D1090422 - Battery case

7. D1076787 - Explosion proof valve for battery case

8. D1070739 - Explosion proof valve for battery case

9. D1066233 - Explosion proof valve for battery case

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as of
1/14/2026
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