Company Filing History:
2 out of 8 
1 out of 2 Years Active: 2025
Title: Changzheng Jia: Innovator in Chemical-Mechanical Polishing Solutions
Introduction
Changzheng Jia is a notable inventor based in Shanghai, China. He has made significant contributions to the field of chemical-mechanical polishing solutions, holding a total of 3 patents. His innovative work has advanced the technology used in semiconductor manufacturing.
Latest Patents
One of his latest patents is a chemical-mechanical polishing solution that includes water, cerium oxide, polyquatemium, carboxylic acid containing a benzene ring, and polyvinylamine. This solution achieves the function of auto stop effectively by utilizing these components together. The polishing rates are low on blanks, while maintaining high polishing rates on patterned silicon chips with high step heights. The solution demonstrates that as the step height decreases, the polishing rate is inhibited, thus achieving the desired auto stop function. Another significant patent involves a chemical-mechanical polishing solution containing water, cerium oxide abrasive particles, and hydroxylamine. This formulation can enhance the removal rate of patterned silicon dioxide with the additional use of 4-hydroxybenzoic acid or salicylhydroxamic acid.
Career Highlights
Changzheng Jia has worked with reputable companies in the microelectronics sector, including Anji Microelectronics (Shanghai) Co., Ltd. and Anji Microelectronics Technology (Shanghai) Co., Ltd. His experience in these organizations has allowed him to refine his expertise in chemical-mechanical polishing technologies.
Collaborations
Throughout his career, Changzheng has collaborated with talented individuals such as Xiaoming Ren and Shoutian Li. These partnerships have contributed to the development of innovative solutions in the field.
Conclusion
Changzheng Jia's contributions to chemical-mechanical polishing solutions highlight his role as a key innovator in the semiconductor industry. His patents reflect a commitment to advancing technology and improving manufacturing 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.