Location History:
- Mumbai, IN (2020 - 2023)
- Jamshedpur, IN (2015 - 2024)
Company Filing History:
5 out of 45 
2 out of 3 
1 out of 1 Years Active: 2015-2024
Title: Innovations of Sumitesh Das
Introduction
Sumitesh Das is a prominent inventor based in Mumbai, India. He has made significant contributions to the field of materials science, particularly in the development of graphene-based technologies. With a total of six patents to his name, his work has garnered attention for its innovative approaches and practical applications.
Latest Patents
One of his latest patents is a method of preparation of reduced graphene oxide (rGO). This patent presents a simple and inexpensive method to produce rGO from low-cost carbon sources such as coal tar pitch, an industrial by-product. The process involves annealing the carbon source at two different temperatures, resulting in high yields of rGO that demonstrate excellent conductivity, good surface area, and very low oxygen content.
Another notable patent is for a hybrid transparent conducting electrode. This invention comprises a reduced graphene oxide film, metal mesh, and textured glass. The reduced graphene oxide film can be coated on the textured glass embedded with the metal mesh or sandwiched between the textured glass and the metal mesh. The transparent conducting electrode exhibits transparency ranging from about 70% to 85% with sheet resistance between approximately 5 Ω/sq to 100 Ω/sq.
Career Highlights
Sumitesh Das has worked with notable companies such as Tata Steel Limited and the Centre for Nano and Soft Matter Sciences. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking research in nanomaterials.
Collaborations
Some of his coworkers include Shyam Kumar Choudhary and Giridhar Udapi Rao Kulkarni. Their collaborative efforts have further advanced the research and development of innovative materials.
Conclusion
Sumitesh Das is a distinguished inventor whose work in graphene technology has the potential to revolutionize various industries. His innovative patents and career achievements reflect his commitment to advancing materials science.