This inventor holds 2 USPTO granted patents and 7 published patent applications. Top assignees: Samsung Electronics Ltd., Seoul National University. Active years: 2026.
Company Filing History:
2 out of 5,708 
1 out of 1,766 
Years Active: 2026
Title: Chulmin Cho - Innovator in Developer Supply and Spin Coating Technologies
Introduction
Chulmin Cho is an inventive mind based in Suwon-si, South Korea. He has made significant strides in the field of developer supply equipment and spin coating apparatus. Although he currently holds no granted patents, his innovative ideas are reflected in his latest patent applications.
Latest Patent Applications
One of his notable applications is for a **Developer Supply Equipment**. This invention includes a first pipe that supplies a developer at a first temperature and a second pipe that supplies the developer at a second temperature. A mixer is fluidly connected to both pipes to mix the developer and obtain a mixed developer. The device also features a first flow rate controller to manage the flow rate of the developer into the mixer, a second flow rate controller for the same purpose, and a nozzle to dispense the mixed developer onto a target substrate. Additionally, a temperature sensor measures the temperature of the mixed developer, while a controller adjusts the flow rate controllers based on this temperature.
Another significant application is for a **Spin Coating Apparatus**. This apparatus includes a substrate supporter that holds a substrate and a substrate supporter driver that rotates the supporter. A laser supply unit is positioned on the substrate supporter to provide a laser, and a laser driver operates the laser supply unit. The laser supply unit is designed to move horizontally along the substrate surface, enhancing the precision of the coating process.
Conclusion
Chulmin Cho's innovative applications in developer supply and spin coating technologies showcase his potential as an inventor. His contributions, although not yet patented, reflect a commitment to advancing these fields. The future may hold great promise for his inventions as they continue to develop.