This inventor holds 1 USPTO granted patent and 1 EPO patent. Top assignee: Shandong Focusfreda Biotech Co., Ltd. Active years: 2025.
Company Filing History:
Years Active: 2025
Title: Ququan Li - Innovator in Organic Chemical Synthesis
Introduction
Ququan Li is a notable inventor based in Shandong, China. He has made significant contributions to the field of organic chemical synthesis, particularly through his innovative methods in preparing acetylated sodium hyaluronate. His work has implications in various applications, showcasing his expertise and dedication to advancing chemical processes.
Latest Patents
Ququan Li holds a patent for a preparation method for acetylated sodium hyaluronate. This invention pertains to the field of organic chemical synthesis and is characterized by a unique process. The method involves subjecting hyaluronate and acetic anhydride to a catalytic reaction in an organic solvent, with the addition of a catalyst. The process is conducted in a protective atmosphere of inert gas, ensuring optimal conditions for the reaction. A water absorbent is added during the reaction, leading to a reaction liquid that undergoes post-treatment, separation, purification, and drying to yield the final product. This method effectively avoids extremes in the degree of substitution, achieving a range of acetyl group substitutions from 2.7 to 3.2, while maintaining mild reactive materials and conditions.
Career Highlights
Ququan Li is associated with Shandong Focusfreda Biotech Co., Ltd., where he applies his expertise in organic chemistry. His innovative approach to chemical synthesis has positioned him as a valuable asset in the biotech industry. His work not only contributes to scientific knowledge but also enhances practical applications in various fields.
Collaborations
Ququan Li collaborates with esteemed colleagues, including Lei Liu and Chunxi Wang. Their combined efforts in research and development further strengthen the impact of their work in the field of organic chemistry.
Conclusion
Ququan Li's contributions to the preparation of acetylated sodium hyaluronate exemplify his innovative spirit and commitment to advancing organic chemical synthesis. His work continues to influence the industry and inspire future research endeavors.