Growing community of inventors

Tokyo, Japan

Tsutomu Maruyama

Average Co-Inventor Count = 2.40

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 = 10

Tsutomu MaruyamaMasaaki Hara (1 patent)Tsutomu MaruyamaTakahiro Okamoto (1 patent)Tsutomu MaruyamaKoichi Kobayashi (1 patent)Tsutomu MaruyamaTakanori Fujishima (1 patent)Tsutomu MaruyamaYuuzou Miyoshi (1 patent)Tsutomu MaruyamaTsutomu Maruyama (3 patents)Masaaki HaraMasaaki Hara (40 patents)Takahiro OkamotoTakahiro Okamoto (30 patents)Koichi KobayashiKoichi Kobayashi (11 patents)Takanori FujishimaTakanori Fujishima (1 patent)Yuuzou MiyoshiYuuzou Miyoshi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nec Corporation (1 from 35,734 patents)

2. Sony Group Corporation (1 from 3,475 patents)

3. Sanyo Denki Co., Ltd. (1 from 322 patents)


3 patents:

1. 12284455 - Optical measurement device and optical measurement system

2. 11959768 - Guidance control device and guidance control method

3. 4965463 - Flat frequency, constant voltage power source device

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as of
1/5/2026
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