Growing community of inventors

Osaka, Japan

Hirofumi Ishizaki

Average Co-Inventor Count = 6.00

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 = 12

Hirofumi Ishizaki ↔ Hiroyuki Nishimura (1 patent)Hirofumi Ishizaki ↔ Tsuyoshi Kadono (1 patent)Hirofumi Ishizaki ↔ Hajime Takeda (1 patent)Hirofumi Ishizaki ↔ Takashi Furuta (1 patent)Hirofumi Ishizaki ↔ Akira Uesaka (1 patent)Hirofumi IshizakiHirofumi Ishizaki (1 patent)Hiroyuki NishimuraHiroyuki Nishimura (9 patents)Tsuyoshi KadonoTsuyoshi Kadono (5 patents)Hajime TakedaHajime Takeda (2 patents)Takashi FurutaTakashi Furuta (2 patents)Akira UesakaAkira Uesaka (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Matsushita Electric Works, Ltd. (1 from 1,623 patents)


1 patent:

1. 5467477 - Antenna and tuner combination

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as of
12/16/2025
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