Company Filing History:
Years Active: 1991-2005
Title: An-Gong Yeh: Innovator in Inkjet Technology
Introduction
An-Gong Yeh is a prominent inventor based in Broomall, PA, USA, known for his significant contributions to the field of inkjet technology. With a portfolio of six patents, Yeh has focused on enhancing the optical density and efficiency of ink formulations, pushing the boundaries of what's possible with aqueous inkjet inks.
Latest Patents
Among his notable innovations is the patent for "Inkjet inks with increased optical density." This invention features aqueous inkjet inks that incorporate self-dispersing pigments alongside effective amounts of multivalent cations. The result is inks that exhibit increased optical density when printed, thereby enhancing the quality of printed materials. Another significant patent is centered around the "Self-dispersing pigment and process of making and use of same." This invention outlines a method where pigments are oxidized with ozone in an aqueous environment. Through a careful mixing operation and maintaining a controlled pH of 6-8, the pigments become self-dispersing, which is crucial for developing advanced inkjet inks.
Career Highlights
An-Gong Yeh currently works at E.I. du Pont de Nemours and Company, also known as DuPont, a leader in innovative materials and technologies. His work focuses on developing superior ink formulations that play an essential role in various printing applications. Yeh's inventions are aimed at providing improved visual quality and sustainability in inkjet printing.
Collaborations
Throughout his career, An-Gong Yeh has collaborated with talented colleagues, including James Lewis Hohman, Jr., and Timothy Allan Bell. These partnerships have been instrumental in advancing their research and in the commercialization of innovative products that benefit the printing industry.
Conclusion
An-Gong Yeh's contributions to ink technology underline the importance of innovation in enhancing printing capabilities. His remarkable patents reflect a commitment to excellence and advancement in the field of inkjet technology, paving the way for future developments in this critical area of printing and manufacturing.