Growing community of inventors

Hara-mura, Japan

Masashi Fujikawa

Average Co-Inventor Count = 2.49

ph-index = 8

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 = 139

Masashi FujikawaToshiyuki Sasaki (9 patents)Masashi FujikawaKunio Omura (6 patents)Masashi FujikawaYoshiaki Kinoshita (5 patents)Masashi FujikawaTomoji Suzuki (5 patents)Masashi FujikawaHiroyuki Nakayama (3 patents)Masashi FujikawaToshihiro Imae (3 patents)Masashi FujikawaHideki Kawakami (3 patents)Masashi FujikawaMorimichi Mizuno (3 patents)Masashi FujikawaNorio Nagata (2 patents)Masashi FujikawaHirotaka Miyabayashi (2 patents)Masashi FujikawaMasashi Fujikawa (22 patents)Toshiyuki SasakiToshiyuki Sasaki (49 patents)Kunio OmuraKunio Omura (19 patents)Yoshiaki KinoshitaYoshiaki Kinoshita (23 patents)Tomoji SuzukiTomoji Suzuki (20 patents)Hiroyuki NakayamaHiroyuki Nakayama (28 patents)Toshihiro ImaeToshihiro Imae (23 patents)Hideki KawakamiHideki Kawakami (21 patents)Morimichi MizunoMorimichi Mizuno (6 patents)Norio NagataNorio Nagata (17 patents)Hirotaka MiyabayashiHirotaka Miyabayashi (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Seiko Epson Corporation (22 from 33,464 patents)


22 patents:

1. 9189696 - Recording device and control method for a recording device

2. 8953867 - Recording device and control method for a recording device

3. 8770708 - Inkjet printer and recovery method for a print head

4. 8465137 - Ink cartridge

5. 8457383 - Recording device and control method for a recording device

6. RE43358 - Data reading apparatus

7. 8061914 - Printer for printing on sheet paper and orthogonally fed roll paper

8. 8047642 - Ink cartridge

9. 8011751 - Inkjet printer and recovery method for a print head

10. 7980468 - Processing method and apparatus for recording media having printed magnetic ink characters

11. 7883191 - Ink cartridge

12. 7837109 - Processing method and apparatus for recording media having printed magnetic ink characters

13. 7770793 - Printing apparatus and printing method

14. 7477427 - Data reading apparatus

15. 7435023 - Printing apparatus and printing method

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1/3/2026
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