Growing community of inventors

Hino, Japan

Masaichi Hasegawa

Average Co-Inventor Count = 6.43

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 = 141

Masaichi HasegawaHisao Yamaguchi (3 patents)Masaichi HasegawaKenichiro Kataoka (2 patents)Masaichi HasegawaKenji Hoshina (2 patents)Masaichi HasegawaKeiji Komoriya (2 patents)Masaichi HasegawaYasuji Sakuma (2 patents)Masaichi HasegawaTakashi Kadota (2 patents)Masaichi HasegawaNoboru Yamazaki (2 patents)Masaichi HasegawaKatsushi Takahashi (2 patents)Masaichi HasegawaNaoki Tsuchiya (1 patent)Masaichi HasegawaKazuya Takenouchi (1 patent)Masaichi HasegawaNaoki Hase (1 patent)Masaichi HasegawaTakashi Kamimura (1 patent)Masaichi HasegawaTakumi Takeyasu (1 patent)Masaichi HasegawaHisashi Fukushima (1 patent)Masaichi HasegawaTakahiro Takeuchi (1 patent)Masaichi HasegawaShiro Kondo (1 patent)Masaichi HasegawaYoshio Osada (1 patent)Masaichi HasegawaIkuo Nagata (1 patent)Masaichi HasegawaMasahiro Tsuchimoto (1 patent)Masaichi HasegawaYoshio Osada (1 patent)Masaichi HasegawaMasaichi Hasegawa (5 patents)Hisao YamaguchiHisao Yamaguchi (9 patents)Kenichiro KataokaKenichiro Kataoka (13 patents)Kenji HoshinaKenji Hoshina (4 patents)Keiji KomoriyaKeiji Komoriya (4 patents)Yasuji SakumaYasuji Sakuma (3 patents)Takashi KadotaTakashi Kadota (2 patents)Noboru YamazakiNoboru Yamazaki (2 patents)Katsushi TakahashiKatsushi Takahashi (2 patents)Naoki TsuchiyaNaoki Tsuchiya (29 patents)Kazuya TakenouchiKazuya Takenouchi (28 patents)Naoki HaseNaoki Hase (23 patents)Takashi KamimuraTakashi Kamimura (10 patents)Takumi TakeyasuTakumi Takeyasu (8 patents)Hisashi FukushimaHisashi Fukushima (3 patents)Takahiro TakeuchiTakahiro Takeuchi (2 patents)Shiro KondoShiro Kondo (2 patents)Yoshio OsadaYoshio Osada (1 patent)Ikuo NagataIkuo Nagata (1 patent)Masahiro TsuchimotoMasahiro Tsuchimoto (1 patent)Yoshio OsadaYoshio Osada (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Teijin Limited (5 from 1,588 patents)


5 patents:

1. 5945450 - Naphthalene derivative

2. 5808144 - Benzene derivatives

3. 5661148 - Pyrrolo[2,3-d]pyrimidine derivatives, process for producing the same and

4. 5614520 - 2-arylthiazole derivatives and pharmaceutical composition thereof

5. 5378700 - Fused pyrimidine derivative, process for preparation of same and

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as of
1/7/2026
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