Growing community of inventors

Tokyo, Japan

Ryuji Otsuka

Average Co-Inventor Count = 4.67

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 = 70

Ryuji OtsukaToshikazu Nakajima (3 patents)Ryuji OtsukaMasao Nishida (3 patents)Ryuji OtsukaYasuhiro Taka (3 patents)Ryuji OtsukaKakuichi Shiomi (1 patent)Ryuji OtsukaYoichi Kusui (1 patent)Ryuji OtsukaKeiichiro Nakaue (1 patent)Ryuji OtsukaRyuji Otsuka (3 patents)Toshikazu NakajimaToshikazu Nakajima (9 patents)Masao NishidaMasao Nishida (4 patents)Yasuhiro TakaYasuhiro Taka (3 patents)Kakuichi ShiomiKakuichi Shiomi (19 patents)Yoichi KusuiYoichi Kusui (3 patents)Keiichiro NakaueKeiichiro Nakaue (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Oki Electric Industry Co., Ltd. (3 from 4,979 patents)

2. Toshiba Corporation (1 from 193 patents)

3. Ship Research Institute (1 from 1 patent)


3 patents:

1. 6085145 - Aircraft control system

2. 6064939 - Individual guidance system for aircraft in an approach control area

3. 6020831 - Flight control system user interface apparatus and control data display

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as of
12/28/2025
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