Company Filing History:
Years Active: 1978-1994
Title: The Innovative Contributions of Sanford M. Marcus
Introduction
Sanford M. Marcus is a notable inventor based in Wilmington, Delaware. He has made significant contributions to the field of thermal conductivity measurements and electrostatic development. With a total of eight patents to his name, Marcus has demonstrated a commitment to advancing technology through his innovative ideas.
Latest Patents
Among his latest patents is a method and apparatus for thermal conductivity measurements. This invention utilizes modulated differential scanning calorimetry (MDSC) to measure the thermal conductivity of materials. The process involves making two consecutive MDSC heat capacity measurements under different conditions. One measurement is conducted under quasi-ideal conditions to obtain an accurate value for the heat capacity of the material. The second measurement is performed under non-ideal conditions, where the effective heat capacity is influenced by thermal conductivity effects. The thermal conductivity is then calculated based on the difference between these two measurements.
Another significant patent is the bipolar liquid electrostatic developer. This developer consists of at least one charge director in a nonpolar liquid, which contains two toner particles with opposite charge polarity. These toner particles are made from a thermoplastic copolymer resin and have an average size of less than 10 micrometers. The developer is designed for use in copying processes and includes a method for the simultaneous transfer of the developer.
Career Highlights
Sanford M. Marcus has worked with prominent companies such as E.I. du Pont de Nemours and Company and TA Instruments, Inc. His experience in these organizations has contributed to his expertise in the field of materials science and electrostatics.
Collaborations
Throughout his career, Marcus has collaborated with notable individuals, including Joseph R. Rellick and Paul C. Donohue. These collaborations have likely enriched his work and led to further advancements in his inventions.
Conclusion
Sanford M. Marcus is a distinguished inventor whose work has significantly impacted the fields of thermal conductivity and electrostatic development. His innovative patents reflect his dedication to advancing technology and improving measurement techniques. His contributions continue to influence the industry and inspire future innovations.