Growing community of inventors

Tokuyamashi, Japan

Mikio Koyama

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 = 36

Mikio Koyama ↔ Hideo Konuma (1 patent)Mikio Koyama ↔ Shigeaki Mochizuki (1 patent)Mikio Koyama ↔ Ichiro Tokumitsu (1 patent)Mikio Koyama ↔ Norio Murai (1 patent)Mikio Koyama ↔ Kohichi Morotomi (1 patent)Mikio KoyamaMikio Koyama (1 patent)Hideo KonumaHideo Konuma (4 patents)Shigeaki MochizukiShigeaki Mochizuki (3 patents)Ichiro TokumitsuIchiro Tokumitsu (3 patents)Norio MuraiNorio Murai (1 patent)Kohichi MorotomiKohichi Morotomi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Idemitsu Petrochemical Co., Ltd. (1 from 555 patents)


1 patent:

1. 4089888 - Method for producing a polycarbonate oligomer

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as of
12/13/2025
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