Growing community of inventors

Ohdate, Japan

Norimasa Kubo

Average Co-Inventor Count = 5.00

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 = 6

Norimasa Kubo ↔ Toshiya Ogasawara (1 patent)Norimasa Kubo ↔ Mamoru Takeda (1 patent)Norimasa Kubo ↔ Hiroshi Nagino (1 patent)Norimasa Kubo ↔ Masanori Ochiishi (1 patent)Norimasa KuboNorimasa Kubo (1 patent)Toshiya OgasawaraToshiya Ogasawara (1 patent)Mamoru TakedaMamoru Takeda (1 patent)Hiroshi NaginoHiroshi Nagino (1 patent)Masanori OchiishiMasanori Ochiishi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Dowa Mining Co., Ltd. (1 from 217 patents)

2. Dowa Engineering Co., Ltd. (1 from 2 patents)


1 patent:

1. 4147452 - Method for constructing a rectangularly shaped tunnel

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12/11/2025
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