Company Filing History:
4 out of 623 
3 out of 12 Years Active: 1994-2004
Title: The Innovative Contributions of Hae Sung Chang
Introduction
Hae Sung Chang is a notable inventor hailing from Daejeon, South Korea. He has made significant strides in the field of chemical technology, holding a total of seven patents. His work primarily focuses on the preparation methods of various chemical compounds, showcasing his expertise and innovative approach in chemistry.
Latest Patents
Among his recent patents, Hae Sung Chang has developed a preparing method of 2-phenylalkanoic acid derivatives. This invention pertains to the synthesis of these derivatives expressed by a specific formula, utilizing 5,6-dihydro-2(4H)-benzofuranone as a starting material. The process is conducted in the presence of a catalyst and an organic acid alkali metal salt under mild conditions. His method allows for the incorporation of groups such as benzoyl, naphthoyl, nicotinoyl, furoyl, or thenoyl, where R can represent a hydrogen atom or a C-C alkyl group. Additionally, he has worked on herbicidal phenoxypropionic acid N-alkyl-N-2-fluorophenyl amide compounds, further demonstrating his contributions to agricultural chemistry.
Career Highlights
Hae Sung Chang's career includes significant roles at esteemed organizations such as the Korea Research Institute of Chemical Technology and Dongbu Hannong Chemical Co., Ltd. His work in these institutions has not only contributed to the development of new chemical processes but also highlighted his capacity as an influential inventor in the field.
Collaborations
Throughout his career, Chang has had the opportunity to collaborate with esteemed colleagues, including Jae Wook Ryu and Dae Whang Kim. These partnerships have fostered innovation and the exchange of ideas, leading to the advancement of various projects and inventions.
Conclusion
In conclusion, Hae Sung Chang's contributions to chemical technology and his innovative patent developments have established him as a respected figure in the field. His work continues to influence research and industry practices, making significant impacts on both scientific advancements and practical applications in chemical processes.
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.