Growing community of inventors

Kanagawa, Japan

Katsuyuki Youfu

Average Co-Inventor Count = 3.85

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 = 7

Katsuyuki YoufuKoji Takaku (4 patents)Katsuyuki YoufuWataru Sotoyama (3 patents)Katsuyuki YoufuTetsu Kitamura (3 patents)Katsuyuki YoufuYasunori Yonekuta (3 patents)Katsuyuki YoufuYuki Hirai (3 patents)Katsuyuki YoufuToru Watanabe (3 patents)Katsuyuki YoufuKensuke Masui (2 patents)Katsuyuki YoufuTianhua Ouyang (2 patents)Katsuyuki YoufuToshihiro Ise (1 patent)Katsuyuki YoufuSaki Takada (1 patent)Katsuyuki YoufuKatsuyuki Youfu (6 patents)Koji TakakuKoji Takaku (63 patents)Wataru SotoyamaWataru Sotoyama (66 patents)Tetsu KitamuraTetsu Kitamura (55 patents)Yasunori YonekutaYasunori Yonekuta (28 patents)Yuki HiraiYuki Hirai (25 patents)Toru WatanabeToru Watanabe (24 patents)Kensuke MasuiKensuke Masui (18 patents)Tianhua OuyangTianhua Ouyang (7 patents)Toshihiro IseToshihiro Ise (85 patents)Saki TakadaSaki Takada (30 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Fujifilm Corporation (3 from 16,136 patents)

2. Udc Ireland Limited (3 from 191 patents)


6 patents:

1. 11563178 - Organic electroluminescent element, compound for use in the element, and light emitting device, display device, and illumination device using the element

2. 9954190 - Organic electric-field light-emitting element, light-emitting material for organic electric-field light-emitting element, and light-emitting device, display device, and illumination device using same element

3. 9705095 - Organic transistor, compound, organic semiconductor material for non-light-emitting organic semiconductor device, material for organic transistor, coating solution for non-light-emitting organic semiconductor device, and organic semiconductor film for non-light-emitting organic semiconductor device

4. 9705096 - Organic transistor, compound, organic semiconductor material for non-light-emitting organic semiconductor device, material for organic transistor, coating solution for non-light-emitting organic semiconductor device, organic semiconductor film for non-light-emitting organic semiconductor device, and method for manufacturing organic semiconductor film for non-light emitting organic semiconductor device

5. 9412963 - Organic electroluminescent element, material for organic electroluminescent element, and light emitting device, display device and illumination device each using the element

6. 7722784 - Liquid crystal composition, liquid crystal device, reflection display material, light modulating material, and anthraquinone compound

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as of
1/7/2026
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