Growing community of inventors

Tsukuba, Japan

Ken-ichi Fujita

Average Co-Inventor Count = 4.74

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 = 22

Ken-ichi FujitaYoshikazu Ikeda (3 patents)Ken-ichi FujitaYoichi Taguchi (3 patents)Ken-ichi FujitaAkihiro Oishi (3 patents)Ken-ichi FujitaTakashi Masuda (3 patents)Ken-ichi FujitaHirobumi Ushijima (1 patent)Ken-ichi FujitaKazuhisa Murata (1 patent)Ken-ichi FujitaKazuo Nakayama (1 patent)Ken-ichi FujitaYutaka Ishigami (1 patent)Ken-ichi FujitaHisae Nakahara (1 patent)Ken-ichi FujitaShinichi Kinugasa (1 patent)Ken-ichi FujitaKen-ichi Fujita (4 patents)Yoshikazu IkedaYoshikazu Ikeda (11 patents)Yoichi TaguchiYoichi Taguchi (9 patents)Akihiro OishiAkihiro Oishi (8 patents)Takashi MasudaTakashi Masuda (6 patents)Hirobumi UshijimaHirobumi Ushijima (6 patents)Kazuhisa MurataKazuhisa Murata (6 patents)Kazuo NakayamaKazuo Nakayama (5 patents)Yutaka IshigamiYutaka Ishigami (2 patents)Hisae NakaharaHisae Nakahara (1 patent)Shinichi KinugasaShinichi Kinugasa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Secretary of Agency of Industrial Science and Technology (2 from 18 patents)

2. National Institute of Advanced Industrial Science and Technology (1 from 1,711 patents)

3. Director-general of Agency of Industrial Science and Technology (1 from 232 patents)


4 patents:

1. 6403756 - Biodegradable high molecular weight polyester and method of preparing same

2. 6180751 - Biodegradable aliphatic copolyester and method of preparing same

3. 6177539 - Aliphatic polyester and process for the production thereof

4. 5650132 - Process for producing hydrogen from hydrocarbon

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as of
12/10/2025
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