Company Filing History:
Years Active: 1988-1990
Title: Innovations by Chung-Nan Chang
Introduction
Chung-Nan Chang is a notable inventor based in Los Altos, California. He has made significant contributions to the field of water purification and boiler systems, holding two patents that showcase his innovative approach to solving complex engineering problems.
Latest Patents
One of his latest patents is titled "Method and means for optimizing batch crystallization for purifying water." This invention presents an improved water purification apparatus and method that utilizes a freeze plate in contact with the surface of water to be purified. The system effectively transfers heat from the water, forming a layer of ice near the surface while producing an electrostatic field to enhance impurity rejection at the ice-water interface. The patent outlines the system and operating parameters necessary for the optimal production of purified water through cycles of freezing, draining, melting, and recovering melt water.
Another significant patent by Chung-Nan Chang is "Method and apparatus for improved start-up procedures in conventional." This invention addresses the cold start-up of closed-loop boiler systems by eliminating conventional venting steps and boiler swelling problems. By using an external pressure source to increase operating pressure in the evaporator section, the invention minimizes premature phase changes and accompanying volume increases, thus improving efficiency.
Career Highlights
Chung-Nan Chang has worked with several companies throughout his career, including Polar Spring Corporation and International Power Technology. His experience in these organizations has contributed to his expertise in engineering and innovation.
Collaborations
Chung-Nan Chang has collaborated with notable professionals in his field, including William M. Conlon and Donald M. Hendricks. These collaborations have likely enriched his work and led to further advancements in his inventions.
Conclusion
Chung-Nan Chang's contributions to water purification and boiler systems demonstrate his innovative spirit and engineering prowess. His patents reflect a commitment to improving technology for practical applications, making a significant impact in his field.