Daniel Y Chang

Introduction

Daniel Y Chang is a notable inventor based in Vadnais Heights, Minnesota, who has made significant contributions to the field of video recording technology. With two patents to his name, his innovative spirit and expertise play a vital role in advancing the industry.

Latest Patents

Chang's latest patents focus on the development of video recording tapes suited for high-speed contact duplication. One of his patents discloses a video tape designed to perform efficiently in high-speed environments. The unique composition of the magnetic layer in this tape includes magnetic pigments mixed with a polymeric binder, ensuring a weight percentage of magnetic pigment ranging from 75 to 88 percent. This design aims for a total pigment loading of at least 80 percent by weight.

Additionally, the backside coating of this tape comprises at least two nonmagnetic pigments within a polymeric binder. The formulation includes a conductive nonmagnetic pigment with a fine particle size, as well as another larger particle pigment. This distinct combination not only enhances the tape's performance but also its surface characteristics, with the magnetic layer exhibiting a lubricant absorption value and a specific surface roughness.

Another one of his patents relates to magnetic recording mediums that utilize innovative polymeric binders. This magnetic layer is applied to a nonmagnetizable substrate, with the binder including a nonhalogenated vinyl copolymer that encompasses various functional groups, which contributes to improved performance and usability in magnetic recording technologies.

Career Highlights

Daniel Y Chang has been a vital part of the Minnesota Mining and Manufacturing Company, where he has honed his skills and expanded his inventive capabilities. His work has received recognition for blending scientific expertise with practical applications, leading to advancements in video technology.

Collaborations

Throughout his career, Chang has collaborated with other skilled professionals, including James G Carlson and Ramesh C Kumar. These collaborations have played a critical role in driving innovation and fostering a creative environment conducive to developing groundbreaking products in the industry.

Conclusion

In summary, Daniel Y Chang stands out as an influential inventor whose contributions to video recording technology continue to pave the way for advancements in the field. His patents reflect not only his creativity and technical knowledge but also his commitment to enhancing the functionality and performance of recording mediums.