For the Inventor, By the Inventor

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Shanghai, China

2Y-Chem, Ltd.

USPTO Granted Patents = 3

% Expired Patents = 66.7

EPO Patents = 1

Forward Citations = 1

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10 inventors (with patents filed for the assignee):

Xungui He (3 out of 5 patents)

Lei Zhang (3 out of 46 patents)

Wensheng Tang (2 out of 3 patents)

4. Xuezhang Wang (2 out of 2 patents)

5. Jinfeng Song (1 out of 1 patent)

6. Yanling Wang (1 out of 4 patents)

7. Yanfeng Zhou (1 out of 1 patent)

8. Jianping Guo (1 out of 3 patents)

9. Xingzhong Zhang (1 out of 1 patent)

10. Yong Liang Liu (1 out of 98 patents)

3 patents: Sort by Forward Citations

1. 10017472 - Hydrate of 2-isopropoxy-5-methyl-4-(piperidin-4-yl) aniline dihydrochloride, preparation method and use of the same (2018-07-10),

2. 9522915 - Method for preparing an important intermediate of linagliptin (2016-12-20),

3. 8614337 - S-5-substituent-N-2'-(thiophene-2-yl)ethyl-tetralin-2-amine or chiral acid salts thereof and use for preparing Rotigotine (2013-12-24),

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USPTO Data Jan 1 1976 - Oct 6 2026

3 Patents

#652 in Shanghai

#8,312 in China

Shanghai, China

2Y-Chem, Ltd.

Forward Citations = 1

10 inventors:

Xungui He (3 out of 5 patents)

Lei Zhang (3 out of 46 patents)

Wensheng Tang (2 out of 3 patents)

4. Xuezhang Wang (2 out of 2 patents)

5. Jinfeng Song (1 out of 1 patent)

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