Yan; Xiufeng
Patent Applications and Registrations
Patent applications and USPTO patent grants for Yan; Xiufeng.The latest application filed is for "n-acetyl amino acid ester derivatives of betulin and preparation method thereof".
- Yan; Xiufeng - Heilongjiang CN
- Yan; Xiufeng - Zhejiang CN
- Yan; Xiufeng - Wenzhou CN
| Patent | Date |
|---|---|
| N-acetyl amino acid ESTER derivatives of betulin and preparation method thereof Grant 9,556,221 - Wang , et al. January 31, 2 | 2017-01-31 |
| N-acetyl amino acid ESTER derivatives of Betulin and preparation method thereof App 20150368291 - WANG; Yang ; et al. | 2015-12-24 |
| Derivate, preparation method and use of 10-methoxycamptothecin Grant 9,034,894 - Wang , et al. May 19, 2 | 2015-05-19 |
| Method for producing 30-halogenated betulinic acid Grant 9,012,666 - Yan , et al. April 21, 2 | 2015-04-21 |
| Method For Producing 30-halogenated Betulinic Acid App 20140296546 - Yan; Xiufeng ; et al. | 2014-10-02 |
| Derivate, Preparation Method And Use Of 10-methoxycamptothecine App 20140194458 - Wang; Yang ; et al. | 2014-07-10 |
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