Manchester, NH, United States of America

Robert G Crandall

This inventor holds 1 USPTO granted patent. Top assignee: Purespectrum, Inc.. Active years: 2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Robert G Crandall. Retrieved from https://idiyas.com/inventor/robert-g-crandall

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 2008

Loading Chart...
1 patent (USPTO):Explore Patents

Title: The Innovative Contributions of Robert G. Crandall

Introduction

Robert G. Crandall is a notable inventor based in Manchester, NH (US). He has made significant contributions to the field of electronic ballasts, particularly with his innovative patent that enhances the efficiency of gas discharge lamps. His work exemplifies the intersection of technology and energy efficiency.

Latest Patents

Crandall holds a patent for a "High frequency electronic ballast with sine wave oscillator." This invention generates a high frequency sinusoidal wave that is applied directly to a gas discharge lamp in multiple phases, resulting in a power-efficient electronic ballast. The design unites a high frequency current-fed oscillator with a transformer, allowing direct current to be applied to the center tap of the transformer primary winding through an appropriately sized inductor. This setup enables the impression of a sinusoidal alternating current at the secondary winding, which is then applied directly to the gas discharge lamp. Feedback from the transformer plays a crucial role in controlling the switching of the oscillator at resonant frequency.

Career Highlights

Crandall's career is marked by his dedication to advancing electronic ballast technology. His innovative approach has not only improved the efficiency of gas discharge lamps but has also contributed to the broader field of energy conservation. He is currently associated with Purespectrum, Inc., where he continues to work on cutting-edge technologies.

Collaborations

Throughout his career, Crandall has collaborated with notable colleagues, including Robert C. Smallwood, Sr. and Earl F. Crandall. These collaborations have fostered an environment of innovation and have led to advancements in their respective fields.

Conclusion

Robert G. Crandall's contributions to the field of electronic ballasts demonstrate his commitment to innovation and energy efficiency. His patent for a high frequency electronic ballast with a sine wave oscillator is a testament to his ingenuity and dedication to improving technology. His work continues to influence the industry and inspire future innovations.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Loading…