Growing community of inventors

Tokyo, Japan

Yoichi Hayakawa

Average Co-Inventor Count = 2.02

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 = 16

Yoichi HayakawaMasahiro Sonoda (5 patents)Yoichi HayakawaKoji Kato (2 patents)Yoichi HayakawaNoboru Otake (2 patents)Yoichi HayakawaHiroyuki Kawai (2 patents)Yoichi HayakawaKozo Tanabe (2 patents)Yoichi HayakawaMasaya Nakagawa (2 patents)Yoichi HayakawaYukio Ito (1 patent)Yoichi HayakawaSatoshi Yamamoto (1 patent)Yoichi HayakawaTatsuhiko Shimomura (1 patent)Yoichi HayakawaKentaro Hasegawa (1 patent)Yoichi HayakawaTatsuho Yoshida (1 patent)Yoichi HayakawaMasahiko Hoshino (1 patent)Yoichi HayakawaKanji Imamura (1 patent)Yoichi HayakawaJunichiro Mochizuki (1 patent)Yoichi HayakawaYoichi Hayakawa (14 patents)Masahiro SonodaMasahiro Sonoda (7 patents)Koji KatoKoji Kato (105 patents)Noboru OtakeNoboru Otake (13 patents)Hiroyuki KawaiHiroyuki Kawai (8 patents)Kozo TanabeKozo Tanabe (3 patents)Masaya NakagawaMasaya Nakagawa (2 patents)Yukio ItoYukio Ito (87 patents)Satoshi YamamotoSatoshi Yamamoto (33 patents)Tatsuhiko ShimomuraTatsuhiko Shimomura (23 patents)Kentaro HasegawaKentaro Hasegawa (7 patents)Tatsuho YoshidaTatsuho Yoshida (6 patents)Masahiko HoshinoMasahiko Hoshino (5 patents)Kanji ImamuraKanji Imamura (1 patent)Junichiro MochizukiJunichiro Mochizuki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Oki Data Corporation (12 from 1,875 patents)

2. Kirin Beer Kabushiki Kaisha (2 from 215 patents)


14 patents:

1. 10139751 - Image formation apparatus detecting a response from communication part

2. 10018949 - Image forming apparatus

3. 9158258 - Image formation apparatus

4. 9137409 - Electronic apparatus and image forming apparatus

5. 8971733 - Image forming unit and image forming apparatus

6. 8837976 - Sub power source-type electronic device and image forming apparatus

7. 8817294 - Image forming apparatus

8. 8750728 - Image forming apparatus that compares stored ID information to determine whether to permit use of a replacement part

9. 8744281 - Image forming apparatus

10. 8351802 - Image forming apparatus having a replaceable part

11. 7822354 - Power conservation device and image forming apparatus

12. 7621452 - Electronic apparatus

13. 4598146 - Compound, arugomycin

14. 4565781 - Antibiotic, Spicamycin

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as of
12/7/2025
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