This inventor holds 2 USPTO granted patents. Top assignees: Samsung Electronics Co., Ltd., Stevens Institute of Technology. Active years: 2001-2004.
Company Filing History:
1 out of 132,108 
1 out of 184 
Years Active: 2001-2004
Title: Innovations by Sangrok Hah
Introduction
Sangrok Hah is a notable inventor based in Seoul, South Korea. He has made significant contributions to the field of integrated circuit manufacturing and materials polishing. With a total of 2 patents, his work showcases innovative methods that enhance the efficiency and effectiveness of manufacturing processes.
Latest Patents
One of Sangrok Hah's latest patents is a method for creating a damascene interconnect using a two-step electroplating process. This method allows for the formation of void-free, low contact-resistance damascene interconnects during the manufacturing of integrated circuits. The process involves a high-temperature rapid annealing after the first copper deposition, ensuring that both narrow and deep openings, as well as wide and shallow openings, are effectively filled. The resulting assembly is then planarized to the original surface without requiring additional annealing.
Another significant patent by Hah is related to tribochemical polishing of ceramics and metals. This method involves rubbing selected ceramic or metal materials against a solid surface in the presence of a nonabrasive liquid medium. The process selectively attacks the material under friction, allowing for effective polishing of both ceramic and metal surfaces, which is particularly useful in the context of integrated circuit structures.
Career Highlights
Sangrok Hah has worked with prominent companies such as Samsung Electronics Co., Ltd. and Stevens Institute of Technology. His experience in these organizations has contributed to his expertise in the field of materials science and engineering.
Collaborations
Throughout his career, Hah has collaborated with talented individuals, including Chankeun Park and Juhyuck Chung. These collaborations have likely enriched his work and led to further advancements in his research.
Conclusion
Sangrok Hah's innovative patents and career achievements highlight his significant contributions to the fields of integrated circuit manufacturing and materials polishing. His work continues to influence advancements in technology and engineering.