Growing community of inventors

Hitachi, Japan

Yasuo Tsumurai

Average Co-Inventor Count = 4.17

ph-index = 4

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 = 239

Yasuo Tsumurai ↔ Takashi Yamamoto (2 patents)Yasuo Tsumurai ↔ Kazunori Yanagisawa (2 patents)Yasuo Tsumurai ↔ Shuichi Kouno (2 patents)Yasuo Tsumurai ↔ Tetsuro Aobori (2 patents)Yasuo Tsumurai ↔ Toshiyuki Utsuki (1 patent)Yasuo Tsumurai ↔ Hirofumi Tanaka (1 patent)Yasuo Tsumurai ↔ Koichi Hasegawa (1 patent)Yasuo Tsumurai ↔ Hideki Sakae (1 patent)Yasuo Tsumurai ↔ Kazuharu Suzuki (1 patent)Yasuo Tsumurai ↔ Seiichi Kawauchi (1 patent)Yasuo Tsumurai ↔ Masato Saitoh (1 patent)Yasuo Tsumurai ↔ Shiyuji Abiko (1 patent)Yasuo TsumuraiYasuo Tsumurai (5 patents)Takashi YamamotoTakashi Yamamoto (32 patents)Kazunori YanagisawaKazunori Yanagisawa (12 patents)Shuichi KounoShuichi Kouno (6 patents)Tetsuro AoboriTetsuro Aobori (3 patents)Toshiyuki UtsukiToshiyuki Utsuki (32 patents)Hirofumi TanakaHirofumi Tanaka (6 patents)Koichi HasegawaKoichi Hasegawa (4 patents)Hideki SakaeHideki Sakae (3 patents)Kazuharu SuzukiKazuharu Suzuki (1 patent)Seiichi KawauchiSeiichi Kawauchi (1 patent)Masato SaitohMasato Saitoh (1 patent)Shiyuji AbikoShiyuji Abiko (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (5 from 42,485 patents)

2. Hitachi Taga Technology Ltd. (1 from 1 patent)


5 patents:

1. 5266004 - Blower

2. D322669 - Electric fan

3. D315598 - Electric fan

4. D291486 - Electric fan

5. D290997 - Electric fan

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12/7/2025
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