Growing community of inventors

Shizuoka, Japan

Shigeaki Oba

Average Co-Inventor Count = 3.27

ph-index = 1

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 = 15

Shigeaki ObaHiroyuki Fujimoto (3 patents)Shigeaki ObaTomoyuki Hayashi (2 patents)Shigeaki ObaSeiji Nakagaki (1 patent)Shigeaki ObaMasanao Miyazaki (1 patent)Shigeaki ObaShigeaki Oba (3 patents)Hiroyuki FujimotoHiroyuki Fujimoto (9 patents)Tomoyuki HayashiTomoyuki Hayashi (9 patents)Seiji NakagakiSeiji Nakagaki (3 patents)Masanao MiyazakiMasanao Miyazaki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Yamaha Hatsudoki Kabushiki Kaisha (3 from 4,237 patents)


3 patents:

1. 11548382 - Vehicle

2. 10744830 - Vehicle

3. 10245947 - Vehicle including a shiftable transmission with operation lever

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idiyas.com
as of
12/18/2025
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