Growing community of inventors

Suwa, Japan

Eiji Tukahara

Average Co-Inventor Count = 7.69

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 = 20

Eiji TukaharaKenji Watanabe (7 patents)Eiji TukaharaTakanobu Kameda (7 patents)Eiji TukaharaTomoyuki Shimmura (7 patents)Eiji TukaharaKenichi Nakajima (7 patents)Eiji TukaharaHideki Oikawa (7 patents)Eiji TukaharaHiroshi Kuriyama (7 patents)Eiji TukaharaChieko Aida (4 patents)Eiji TukaharaYoshiyuki Yanagisawa (1 patent)Eiji TukaharaEiji Tukahara (7 patents)Kenji WatanabeKenji Watanabe (200 patents)Takanobu KamedaTakanobu Kameda (82 patents)Tomoyuki ShimmuraTomoyuki Shimmura (70 patents)Kenichi NakajimaKenichi Nakajima (29 patents)Hideki OikawaHideki Oikawa (18 patents)Hiroshi KuriyamaHiroshi Kuriyama (14 patents)Chieko AidaChieko Aida (47 patents)Yoshiyuki YanagisawaYoshiyuki Yanagisawa (35 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Seiko Epson Corporation (5 from 33,436 patents)

2. King Jim Co., Ltd. (4 from 168 patents)

3. Seiko Epson Corporation and King Jim Co., Ltd. (2 from 5 patents)


7 patents:

1. 6152624 - Stamp-making apparatus, as well as function changeover mechanism,

2. 6062749 - Dial input device

3. 6025051 - Plate-making strip and a plate making-strip group, as well as a printer

4. 6016749 - Stamp-making apparatus, as well as function changeover mechanism,

5. 6006661 - Stamp-making apparatus, as well as function changeover mechanism,

6. 5934191 - Electronic apparatus

7. 5779373 - Ribbon cartridge device for electronic equipment

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idiyas.com
as of
12/19/2025
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