Growing community of inventors

Hamamatsu, Japan

Junji Fujii

Average Co-Inventor Count = 1.69

ph-index = 6

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 = 61

Junji FujiiHideyuki Masuda (2 patents)Junji FujiiYutaka Tohgi (2 patents)Junji FujiiHiroyasu Abe (2 patents)Junji FujiiRyuji Hashimoto (1 patent)Junji FujiiYukimasa Okumura (1 patent)Junji FujiiTomio Okamoto (1 patent)Junji FujiiIsao Shimoda (1 patent)Junji FujiiMitsugu Yaguchi (1 patent)Junji FujiiJunji Fujii (11 patents)Hideyuki MasudaHideyuki Masuda (31 patents)Yutaka TohgiYutaka Tohgi (18 patents)Hiroyasu AbeHiroyasu Abe (6 patents)Ryuji HashimotoRyuji Hashimoto (18 patents)Yukimasa OkumuraYukimasa Okumura (6 patents)Tomio OkamotoTomio Okamoto (3 patents)Isao ShimodaIsao Shimoda (3 patents)Mitsugu YaguchiMitsugu Yaguchi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Yamaha Corporation (11 from 5,450 patents)


11 patents:

1. 8148623 - Apparatus for assisting in playing musical instrument

2. 7858871 - Playing device

3. 7671260 - Component of musical instrument, musical instrument and production method of the same

4. 7642439 - Electronic drum and its drum head

5. 7605324 - Apparatus for assisting in playing musical instrument

6. 7554028 - Performance assist apparatus of wind instrument

7. 6667429 - Method for manufacturing modified wood

8. 5587544 - Drum

9. 5410937 - Supporting mechanism for a sound generator of a musical instrument

10. D350362 - Musical drum rim

11. 4858510 - Resonant musical instruments

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12/10/2025
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