Growing community of inventors

Tokyo, Japan

Ken Ishiguro

Average Co-Inventor Count = 6.00

ph-index = 2

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 = 14

Ken IshiguroKoichi Nagai (2 patents)Ken IshiguroIsao Kano (2 patents)Ken IshiguroYutaka Kojima (2 patents)Ken IshiguroHiroyo Oshima (2 patents)Ken IshiguroKunio Hata (1 patent)Ken IshiguroYoshihiko Shimura (1 patent)Ken IshiguroKen Ishiguro (2 patents)Koichi NagaiKoichi Nagai (48 patents)Isao KanoIsao Kano (14 patents)Yutaka KojimaYutaka Kojima (12 patents)Hiroyo OshimaHiroyo Oshima (6 patents)Kunio HataKunio Hata (15 patents)Yoshihiko ShimuraYoshihiko Shimura (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Jujo Paper Co., Ltd. (2 from 107 patents)


2 patents:

1. 4567114 - Thermal dye-transfer type recording sheet

2. 4490435 - Thermal dye-transfer type recording sheet

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as of
1/17/2026
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