Company Filing History:
2 out of 2 
1 out of 832,680 Years Active: 2020-2023
Title: Sanjiban Chakraborty: Innovator in Polymer Technology
Introduction
Sanjiban Chakraborty is a notable inventor based in San Leandro, CA (US). He has made significant contributions to the field of polymer technology, holding a total of 3 patents. His work focuses on developing innovative methods for creating advanced polymeric materials with unique properties.
Latest Patents
One of his latest patents is titled "Methods of making polymers using isosorbide." This invention is based on the discovery that the polymeric materials described produce polyurethane copolymers with advantageous optical properties. In particular embodiments, these copolymers comprise repeating units of isosorbide and a difunctional linker, which can include diisocyanate, diisothiocyanate, dicarboxylic acid, and other monomers. The advantageous optical properties of these materials include a refractive index of about 1.5 and an Abbe value of at least about 50. Additionally, he has developed a patent for a "Method and system for molding of thermoplastic optical polymers." This patent outlines methods for molding thermoplastic polymers into optical elements, such as cylindrical discs and finished lenses, using high-temperature compression molding techniques.
Career Highlights
Sanjiban has worked with various companies throughout his career, including Novol, Inc. His experience in the industry has allowed him to refine his skills and contribute to the advancement of polymer technology.
Collaborations
He has collaborated with notable coworkers, including Monica Bhatia and Jagdish M Jethmalani, who have contributed to his innovative projects.
Conclusion
Sanjiban Chakraborty is a distinguished inventor whose work in polymer technology has led to the development of advanced materials with unique optical properties. His contributions continue to influence the field and inspire future innovations.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.