Growing community of inventors

Komae, Japan

Dai Kawarai

Average Co-Inventor Count = 5.00

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 = 10

Dai Kawarai ↔ Takeshi Kawahara (1 patent)Dai Kawarai ↔ Masahiro Takeshima (1 patent)Dai Kawarai ↔ Kazuo Tamura (1 patent)Dai Kawarai ↔ Masayoshi Kondou (1 patent)Dai KawaraiDai Kawarai (1 patent)Takeshi KawaharaTakeshi Kawahara (6 patents)Masahiro TakeshimaMasahiro Takeshima (4 patents)Kazuo TamuraKazuo Tamura (2 patents)Masayoshi KondouMasayoshi Kondou (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,517 patents)

2. Hitachi Engineering Services Co., Ltd. (1 from 30 patents)

3. Matrix Gmbh (1 from 14 patents)


1 patent:

1. 8248204 - Tag detecting system, moving object detecting method, and entrance/exit management system

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as of
1/6/2026
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