Growing community of inventors

Tsuchiura, Japan

Ryozo Fujikawa

Average Co-Inventor Count = 7.00

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 = 16

Ryozo Fujikawa ↔ Shigehisa Hagura (1 patent)Ryozo Fujikawa ↔ Kazuhiko Hiraoka (1 patent)Ryozo Fujikawa ↔ Tomoyuki Miyata (1 patent)Ryozo Fujikawa ↔ Junya Kawamoto (1 patent)Ryozo Fujikawa ↔ Hiroshi Tabeta (1 patent)Ryozo Fujikawa ↔ Keiji Ahiko (1 patent)Ryozo FujikawaRyozo Fujikawa (1 patent)Shigehisa HaguraShigehisa Hagura (44 patents)Kazuhiko HiraokaKazuhiko Hiraoka (39 patents)Tomoyuki MiyataTomoyuki Miyata (36 patents)Junya KawamotoJunya Kawamoto (33 patents)Hiroshi TabetaHiroshi Tabeta (22 patents)Keiji AhikoKeiji Ahiko (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi Construction Machinery Co., Ltd. (1 from 1,504 patents)


1 patent:

1. D752113 - Excavator

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as of
12/27/2025
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