Growing community of inventors

Izumiotsu, Japan

Keiichi Sanpei

Average Co-Inventor Count = 3.69

ph-index = 5

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 = 71

Keiichi SanpeiSadao Fukushima (2 patents)Keiichi SanpeiYoshio Matsumoto (2 patents)Keiichi SanpeiMasami Kawasaki (1 patent)Keiichi SanpeiTetsuya Nishida (1 patent)Keiichi SanpeiTaro Saito (1 patent)Keiichi SanpeiKiyoto Kasamatsu (1 patent)Keiichi SanpeiYoshitaka Sato (1 patent)Keiichi SanpeiYoshiaki Matsuda (1 patent)Keiichi SanpeiYoshifumi Nagamine (1 patent)Keiichi SanpeiYoshitaka Satoh (1 patent)Keiichi SanpeiKazumi Umeki (1 patent)Keiichi SanpeiMasahide Tsujino (1 patent)Keiichi SanpeiYoshibumi Nagamine (1 patent)Keiichi SanpeiYoshimitsu Ohashi (1 patent)Keiichi SanpeiHirobumi Sakane (1 patent)Keiichi SanpeiTakaaki Ohno (1 patent)Keiichi SanpeiYoshimitsu Oohashi (1 patent)Keiichi SanpeiKeiichi Sanpei (6 patents)Sadao FukushimaSadao Fukushima (2 patents)Yoshio MatsumotoYoshio Matsumoto (2 patents)Masami KawasakiMasami Kawasaki (11 patents)Tetsuya NishidaTetsuya Nishida (5 patents)Taro SaitoTaro Saito (4 patents)Kiyoto KasamatsuKiyoto Kasamatsu (3 patents)Yoshitaka SatoYoshitaka Sato (2 patents)Yoshiaki MatsudaYoshiaki Matsuda (2 patents)Yoshifumi NagamineYoshifumi Nagamine (2 patents)Yoshitaka SatohYoshitaka Satoh (1 patent)Kazumi UmekiKazumi Umeki (1 patent)Masahide TsujinoMasahide Tsujino (1 patent)Yoshibumi NagamineYoshibumi Nagamine (1 patent)Yoshimitsu OhashiYoshimitsu Ohashi (1 patent)Hirobumi SakaneHirobumi Sakane (1 patent)Takaaki OhnoTakaaki Ohno (1 patent)Yoshimitsu OohashiYoshimitsu Oohashi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kubota Corporation (6 from 2,667 patents)


6 patents:

1. 6595680 - Food mixing apparatus

2. 6367963 - Food mixing apparatus

3. 4845929 - Cutter-trimmer of walk-behind type

4. 4669549 - Rake device for rotary cultivators

5. 4556113 - Structure for attaching tines for cultivation by reversible rotation in

6. 4543079 - Device for automatically adjusting tension of endless running member in

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idiyas.com
as of
12/15/2025
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