Growing community of inventors

Kawasaki-ku, Japan

Hideharu Koga

Average Co-Inventor Count = 4.00

ph-index = 1

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

Hideharu Koga ↔ Toyofumi Watanabe (2 patents)Hideharu Koga ↔ Toru Imokawa (2 patents)Hideharu Koga ↔ Takayuki Urakawa (2 patents)Hideharu KogaHideharu Koga (2 patents)Toyofumi WatanabeToyofumi Watanabe (25 patents)Toru ImokawaToru Imokawa (8 patents)Takayuki UrakawaTakayuki Urakawa (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nkk Corporation (2 from 614 patents)


2 patents:

1. 5810991 - Zinc-electroplated steel sheet and method thereof

2. 5650238 - Zinc-electroplated steel sheet

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1/7/2026
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