Location History:
- Chelmsford, MA (US) (1998 - 2000)
- Plano, TX (US) (2002)
Company Filing History:
1 out of 5,073 
1 out of 2 
1 out of 15 Years Active: 1998-2002
Title: Pradeep Kumar Nandam: Innovator in HID Lamp Technology
Introduction
Pradeep Kumar Nandam is an accomplished inventor based in Chelmsford, MA (US). He holds a total of 3 patents that showcase his expertise in the field of lighting technology, particularly in high-intensity discharge (HID) lamps and electrodeless fluorescent lamps. His innovative designs have contributed significantly to advancements in efficient lighting solutions.
Latest Patents
One of Nandam's notable patents is for a "Variable structure circuit topology for HID lamp electronic ballasts." This invention involves a high-intensity discharge lamp driving circuit that includes a first pair of switching devices connected to a high-frequency resonant filter, and a second pair of switching devices connected to a ripple-reducing filter. The circuit operates in a half-bridge topology during the start-up operation mode and transitions to a full-bridge topology during steady-state operation. This design enhances the efficiency and performance of HID lamps.
Another significant patent is for a "High-frequency electrodeless fluorescent lamp." This lamp operates within a frequency range of 50-1000 KHz and power from 20 to 200 W. It features a bulbous envelope filled with rare gas and metal vapor, along with a reentrant cavity. The inner walls of the envelope are coated with phosphor and a protective coating. An induction coil generates an inductively-coupled plasma, producing visible and UV radiation that is converted into visible light by the phosphor. This innovative design achieves power efficiency comparable to electrodeless RF lamps.
Career Highlights
Throughout his career, Pradeep Kumar Nandam has worked with prominent companies such as Black & Decker Corporation and Matsushita Electric Works R&D Laboratories Inc. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in lighting technology.
Collaborations
Nandam has collaborated with notable individuals in his field, including Craig Alan Schell and James R Parks. These partnerships have fostered a creative environment that has led to the development of his innovative patents.
Conclusion
Pradeep Kumar Nandam is a distinguished inventor whose contributions to HID lamp technology and electrodeless fluorescent lamps have made a significant impact in the lighting industry. His innovative designs and patents reflect his commitment to advancing efficient lighting solutions.