Growing community of inventors

Atsugi, Japan

Tooru Hiyama

Average Co-Inventor Count = 4.00

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

Tooru Hiyama ↔ Tatsuki Ishii (1 patent)Tooru Hiyama ↔ Tetsuo Sasaki (1 patent)Tooru Hiyama ↔ Misao Takimoto (1 patent)Tooru HiyamaTooru Hiyama (1 patent)Tatsuki IshiiTatsuki Ishii (8 patents)Tetsuo SasakiTetsuo Sasaki (5 patents)Misao TakimotoMisao Takimoto (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,488 patents)


1 patent:

1. 5544068 - System and method for optimizing delays in semiconductor circuits

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12/12/2025
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