Lim H Cheung

Title: Lim H Cheung: Innovator in Radiotherapy and Seismic Technology

Introduction

Lim H Cheung is a notable inventor based in Carrollton, TX (US). He has made significant contributions to the fields of radiotherapy and seismic technology. With a total of 3 patents, his work reflects a commitment to advancing medical and geological applications.

Latest Patents

Cheung's latest patents include a small beam area, mid-voltage radiotherapy system designed to reduce skin dose and scatter around the treatment volume while improving overall accuracy. This innovative radiotherapy system features an X-ray tube operating at 100 to 800 kVp, providing X-ray beams of 50 mm diameter or less. It is configured to move the entrance beam footprint on the body during irradiation to predetermined positions, ensuring that the intervening tissue dose rate remains at a safe level. The system allows for a treatment area that is 20 to 100 times the beam area, enhancing patient safety.

Another significant patent is a piezoelectric seismic vibration device and method. This invention involves a vibrator and method for transmitting seismic signals into the earth to gather data on various subsurface characteristics. The device is driven by piezoelectric transducers, which produce better signal resolution at higher frequencies compared to traditional hydraulic vibrators. These piezoelectric vibrators can be utilized at the earth's surface, within boreholes, or while permanently buried underground.

Career Highlights

Throughout his career, Lim H Cheung has worked with prominent organizations, including the Standard Oil Company. His experience in these roles has contributed to his expertise in developing innovative technologies.

Collaborations

One of his notable collaborators is John K Grady, with whom he has worked on various projects.

Conclusion

Lim H Cheung's contributions to radiotherapy and seismic technology demonstrate his innovative spirit and dedication to improving safety and efficiency in these fields. His patents reflect a blend of creativity and technical expertise that continues to influence advancements in medical and geological applications.