Growing community of inventors

Nagoya, Japan

Hiroyuki Okajima

Average Co-Inventor Count = 7.00

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 = 27

Hiroyuki Okajima ↔ Sakae Sugiyama (1 patent)Hiroyuki Okajima ↔ Kimio Kanda (1 patent)Hiroyuki Okajima ↔ Katsumi Kawai (1 patent)Hiroyuki Okajima ↔ Sigeru Kajiyama (1 patent)Hiroyuki Okajima ↔ Hiroyuki Takeda (1 patent)Hiroyuki Okajima ↔ Ichio Iseki (1 patent)Hiroyuki OkajimaHiroyuki Okajima (1 patent)Sakae SugiyamaSakae Sugiyama (12 patents)Kimio KandaKimio Kanda (8 patents)Katsumi KawaiKatsumi Kawai (4 patents)Sigeru KajiyamaSigeru Kajiyama (4 patents)Hiroyuki TakedaHiroyuki Takeda (3 patents)Ichio IsekiIchio Iseki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,488 patents)

2. The Tokyo Electric Power Company, Incorporated (1 from 177 patents)

3. Chubu Electric Power Company, Inc. (1 from 73 patents)

4. The Chugoku Electric Power Co., Inc. (1 from 66 patents)

5. Tohoku Electric Power Company, Inc. (1 from 63 patents)


1 patent:

1. 4331034 - Ultrasonic probing apparatus

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12/16/2025
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