Location History:
- Nanjing, CN (2018 - 2020)
- Jiangsu, CN (2023)
Company Filing History:
2 out of 21 
1 out of 4 
1 out of 3 Years Active: 2018-2023
Title: Yonggang Xu: Innovator in Pharmaceutical Chemistry
Introduction
Yonggang Xu is a prominent inventor based in Nanjing, China, known for his significant contributions to pharmaceutical chemistry. He holds a total of five patents, showcasing his innovative approach to developing medical products and health care solutions.
Latest Patents
One of his latest patents is focused on low molecular weight chondroitin sulfate, which includes a composition, preparation method, and its various uses. This invention relates to a low molecular weight chondroitin sulfate with an average molecular weight of less than 1000 Dalton. The production process involves chondroitin sulfate lyase degradation, deproteinization, filtration, sterilization, and drying using macromolecular sulfate chondroitin as a raw material. The resulting product exhibits a narrow molecular weight distribution range, with a chondroitin sulfate disaccharide ratio of 43-60% and a tetrasaccharide ratio of 30-45%. The total oligosaccharide content exceeds 97%, while the protein content remains below 0.5%. This low molecular weight chondroitin sulfate demonstrates a remarkable repair effect on chondrocytes damaged by hydrogen peroxide, making it a valuable raw material for medical products, health care products, cosmetics, and food.
Another notable patent involves a method for resolving a racemic mixture to obtain (−)-Huperzine A. This method includes separating (−)-Huperzine A from the racemic mixture using chiral high-performance liquid chromatography (HPLC). The process utilizes a mobile phase containing an alcohol and a solvent selected from dichloromethane, trichloromethane, or a mixture thereof, along with a chiral stationary phase comprising a polysaccharide derivative.
Career Highlights
Yonggang Xu has worked with several reputable companies, including Amphastar Pharmaceuticals, Inc. and Nanjing Hanxin Pharmaceutical Technology Co., Ltd. His experience in these organizations has contributed to his expertise in pharmaceutical innovations.
Collaborations
Some of his notable coworkers include Haoning Zhang and Song Chen, who have collaborated with him on various projects in the field of pharmaceutical research.
Conclusion
Yonggang Xu's innovative work in pharmaceutical chemistry, particularly in the development of low molecular weight chondroitin sulfate and methods for resolving racemic mixtures, highlights his
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.