Growing community of inventors

Ibaraki-ken, Japan

Shizuko Hattori

Average Co-Inventor Count = 7.63

ph-index = 2

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 = 198

Shizuko HattoriTsutomu Fujimoto (3 patents)Shizuko HattoriAtsushi Koseki (2 patents)Shizuko HattoriAkihiko Sakai (2 patents)Shizuko HattoriTohru Horie (2 patents)Shizuko HattoriTakao Nagata (2 patents)Shizuko HattoriSeizi Iizuka (2 patents)Shizuko HattoriTomoyuki Tani (2 patents)Shizuko HattoriMasahiro Koyama (1 patent)Shizuko HattoriTsuyoshi Kai (1 patent)Shizuko HattoriYasuyuki Momoi (1 patent)Shizuko HattoriNorihisa Miyake (1 patent)Shizuko HattoriHiroshi Sakairi (1 patent)Shizuko HattoriShizuko Hattori (3 patents)Tsutomu FujimotoTsutomu Fujimoto (3 patents)Atsushi KosekiAtsushi Koseki (4 patents)Akihiko SakaiAkihiko Sakai (4 patents)Tohru HorieTohru Horie (3 patents)Takao NagataTakao Nagata (2 patents)Seizi IizukaSeizi Iizuka (2 patents)Tomoyuki TaniTomoyuki Tani (2 patents)Masahiro KoyamaMasahiro Koyama (19 patents)Tsuyoshi KaiTsuyoshi Kai (15 patents)Yasuyuki MomoiYasuyuki Momoi (11 patents)Norihisa MiyakeNorihisa Miyake (9 patents)Hiroshi SakairiHiroshi Sakairi (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (3 from 42,508 patents)


3 patents:

1. 616215 - Ambulatory exercise machine and ambulatory exercise system

2. 6162151 - Ambulatory exercise machine and ambulatory exercise system

3. 5555179 - Control method and control apparatus of factory automation system

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1/3/2026
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