Location History:
- Hsin, Tien, Taipei, TW (1993)
- Hsin Tien City, Taipei Hsien, TW (1995)
- Chu-Pei, TW (2002)
Company Filing History:
1 out of 7,087 
2 out of 832,891 Years Active: 1993-2002
Title: W H Cheng: Innovator in Semiconductor Technology and Design
Introduction
W H Cheng is a notable inventor based in Hsin, Tien, Taipei, Taiwan. He has made significant contributions to the fields of semiconductor technology and product design, holding a total of 3 patents. His innovative approaches have led to advancements in cleaning processes and ergonomic design.
Latest Patents
One of W H Cheng's latest patents is a "Method for cleaning interior of etching chamber." This process involves cleaning the interior walls of a reaction chamber after etching silicon wafers. The method includes bombarding the chamber walls with a first type of plasma during a dry cleaning operation, followed by a second type of plasma containing hydrogen in a warm-up operation. Notably, no silicon wafers need to be present during these operations. Another significant patent is for a "Chair assembly," which features a design that includes multiple supporting legs connected to a locating member and a ring for holding a stem socket. This assembly allows for adjustable elevation and includes a cushion secured through a rotary joint, enhancing user comfort and functionality.
Career Highlights
Throughout his career, W H Cheng has worked with various companies, including United Microelectronics Corporation. His experience in the semiconductor industry has allowed him to develop practical solutions that address industry challenges.
Collaborations
W H Cheng has collaborated with notable coworkers such as Yu-Chang Chow and Chia-Fu Yeh. Their combined expertise has contributed to the successful development of innovative technologies and products.
Conclusion
W H Cheng's contributions to innovation in semiconductor technology and design are commendable. His patents reflect a commitment to improving processes and products in the industry.