Growing community of inventors

Tokyo, Japan

Tsuyoshi Okubo

Average Co-Inventor Count = 1.67

ph-index = 3

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 = 31

Tsuyoshi OkuboKen Takamatsu (3 patents)Tsuyoshi OkuboTakayuki Tsukada (2 patents)Tsuyoshi OkuboJiayi Shan (2 patents)Tsuyoshi OkuboSubiantoro (2 patents)Tsuyoshi OkuboKoichi Handa (2 patents)Tsuyoshi OkuboJian Jiang (1 patent)Tsuyoshi OkuboTsuyoshi Okubo (9 patents)Ken TakamatsuKen Takamatsu (4 patents)Takayuki TsukadaTakayuki Tsukada (9 patents)Jiayi ShanJiayi Shan (5 patents)SubiantoroSubiantoro (2 patents)Koichi HandaKoichi Handa (2 patents)Jian JiangJian Jiang (11 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hoya Corporation (4 from 2,528 patents)

2. Oki Data Corporation (3 from 1,875 patents)

3. Hodogaya Chemical Co., Ltd. (1 from 328 patents)

4. Bussan Nanotech Research Institute, Inc. (1 from 3 patents)


9 patents:

1. 9251447 - Image formation apparatus and method of forming image

2. 9106870 - Printing apparatus and image processing apparatus that restricts user input under certain conditions

3. 9098796 - Image forming device and image forming method

4. 7955699 - Composite material

5. 7214430 - Composite material

6. 6995276 - Cyclic disulfide compound, process of producing the same and optical product comprising the same

7. 6706894 - Thiol compound, method for producing the same and optical product made with the same

8. 6696540 - Episulfide compound, method for producing the same and optical product comprising the same

9. 6559276 - Asymmetric disulfide compounds, method for producing the same, and optical products

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as of
12/9/2025
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