Growing community of inventors

Tokyo, Japan

Kazuo Hayakawa

Average Co-Inventor Count = 3.00

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 = 5

Kazuo HayakawaNobuo Kawakami (1 patent)Kazuo HayakawaMasayuki Makise (1 patent)Kazuo HayakawaHisashi Yamada (1 patent)Kazuo HayakawaMasato Horinouchi (1 patent)Kazuo HayakawaKazuo Hayakawa (2 patents)Nobuo KawakamiNobuo Kawakami (37 patents)Masayuki MakiseMasayuki Makise (4 patents)Hisashi YamadaHisashi Yamada (4 patents)Masato HorinouchiMasato Horinouchi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Dwango Co., Ltd. (1 from 94 patents)

2. The Lion Fat and Oil Co. Ltd. (1 from 75 patents)


2 patents:

1. 7596604 - Email information providing server, email information providing system, email information providing method and email information providing program

2. 4259456 - Odorless polyolefin resin compositions

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as of
1/7/2026
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