Growing community of inventors

Takatsuki, Japan

Yasutaka Ishii

Average Co-Inventor Count = 2.37

ph-index = 9

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 = 230

Yasutaka IshiiTatsuya Nakano (46 patents)Yasutaka IshiiNaruhisa Hirai (10 patents)Yasutaka IshiiTakahiro Iwahama (9 patents)Yasutaka IshiiKeizo Inoue (4 patents)Yasutaka IshiiSatoshi Sakaguchi (3 patents)Yasutaka IshiiShinya Nagano (2 patents)Yasutaka IshiiMasahiko Terada (2 patents)Yasutaka IshiiNaoto Okuyama (2 patents)Yasutaka IshiiTakamasa Suzuki (1 patent)Yasutaka IshiiYoshinori Funaki (1 patent)Yasutaka IshiiYasuteru Kajikawa (1 patent)Yasutaka IshiiIchiro Takase (1 patent)Yasutaka IshiiYoshiya Narasaki (1 patent)Yasutaka IshiiAtsuo Tatsumi (1 patent)Yasutaka IshiiMinoru Takano (1 patent)Yasutaka IshiiNaruhisa Hiral (1 patent)Yasutaka IshiiTatsuya Research Center Daicel Chemical IndLtd Nakano (0 patent)Yasutaka IshiiYasutaka Ishii (55 patents)Tatsuya NakanoTatsuya Nakano (55 patents)Naruhisa HiraiNaruhisa Hirai (16 patents)Takahiro IwahamaTakahiro Iwahama (19 patents)Keizo InoueKeizo Inoue (39 patents)Satoshi SakaguchiSatoshi Sakaguchi (11 patents)Shinya NaganoShinya Nagano (8 patents)Masahiko TeradaMasahiko Terada (3 patents)Naoto OkuyamaNaoto Okuyama (2 patents)Takamasa SuzukiTakamasa Suzuki (49 patents)Yoshinori FunakiYoshinori Funaki (18 patents)Yasuteru KajikawaYasuteru Kajikawa (15 patents)Ichiro TakaseIchiro Takase (5 patents)Yoshiya NarasakiYoshiya Narasaki (2 patents)Atsuo TatsumiAtsuo Tatsumi (1 patent)Minoru TakanoMinoru Takano (1 patent)Naruhisa HiralNaruhisa Hiral (1 patent)Tatsuya Research Center Daicel Chemical IndLtd NakanoTatsuya Research Center Daicel Chemical IndLtd Nakano (0 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Daicel Chemical Industries, Ltd. (50 from 1,165 patents)

2. Other (3 from 832,680 patents)

3. Yasutaka Ishii (2 from 2 patents)

4. Daicel Corporation (1 from 638 patents)

5. Diacel Chemical Industries, Ltd. (1 from 7 patents)

6. Daicel Corporation Industries, Ltd. (1 from 2 patents)

7. San-petrochemicals Co., Ltd. (1 from 1 patent)


55 patents:

1. 9447013 - Method for producing oxide

2. 8680267 - Process for producing amide or lactam

3. 8410308 - Process for production of oxygen-containing organic compound

4. 7759515 - Catalyst comprising N-substituted cyclic imide compound and process for producing organic compounds using the catalyst

5. 7745654 - Process for the preparation of vinyl- or allyl-containing compounds

6. 7741514 - Catalyst comprising N-substituted cyclic imide compound and process for producing organic compound using the catalyst

7. 7608727 - Process for the preparation of furan compounds

8. 7414160 - Process for producing aromatic compounds

9. 7368615 - Catalyst comprising a cyclic imide compound and process for producing organic compounds using the catalyst

10. 7304184 - Process for producing allyl-containing compounds

11. 7288649 - Catalyst comprising cyclic acylurea compound and process for producing organic compounds using the catalyst

12. 7271285 - Process for producing aromatic carboxylic acids

13. 7271297 - Process for producing vinyl ether compounds

14. RE39744 - Adamantane derivatives and process for producing them

15. 7183423 - Process for the preparation of organic compounds with imide catalysts

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12/7/2025
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