Growing community of inventors

Maebashi, Japan

Tomoko Hasegawa

Average Co-Inventor Count = 2.25

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 = 38

Tomoko HasegawaTakashi Umeno (2 patents)Tomoko HasegawaKiyokazu Sakurai (2 patents)Tomoko HasegawaKatsuhiko Shiraishi (2 patents)Tomoko HasegawaKazuhiro Ami (2 patents)Tomoko HasegawaTetsuo Kosaka (2 patents)Tomoko HasegawaTomoko Hasegawa (3 patents)Takashi UmenoTakashi Umeno (12 patents)Kiyokazu SakuraiKiyokazu Sakurai (10 patents)Katsuhiko ShiraishiKatsuhiko Shiraishi (9 patents)Kazuhiro AmiKazuhiro Ami (8 patents)Tetsuo KosakaTetsuo Kosaka (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsubishi Pencil Kabushiki Kaisha (3 from 196 patents)

2. Hanix Co., Ltd. (1 from 3 patents)


3 patents:

1. 5733344 - Temporary hair dyes containing a dispersant, titanium black, pigments

2. 5693313 - Teeth coating liquid

3. 5478552 - Liquid cosmetic composition

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as of
12/4/2025
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