Location History:
- Mayfield Heights, OH (US) (2002 - 2008)
- Cleveland, OH (US) (2013)
- Broadview Heighs, OH (US) (2016)
- East Cleveland, OH (US) (2017 - 2020)
- Broadview Heights, OH (US) (2010 - 2023)
Company Filing History:
15 out of 273 
12 out of 51,920 
4 out of 127 
Years Active: 2002-2023
Title: Ashfaqul Islam Chowdhury: Innovator in Lighting Technology
Introduction
Ashfaqul Islam Chowdhury is a prolific inventor based in Broadview Heights, OH, with an impressive portfolio of 33 patents. His innovative work primarily focuses on creating advanced lighting solutions, showcasing his commitment to enhancing modern illumination technology.
Latest Patents
Among his recent patents, Ashfaqul has developed cutting-edge color stable red-emitting phosphors. These lighting apparatuses are designed to include a semiconductor light source in direct contact with a polymer composite that comprises a color stable manganese-doped phosphor. Notably, these apparatuses maintain a color shift of ≤1.5 MacAdam ellipses after operating for more than 2,000 hours at an LED current density exceeding 2 A/cm, demonstrating a wall-plug efficiency greater than 40% and functioning at a board temperature above 25° C.
Career Highlights
Throughout his career, Ashfaqul has worked with prominent companies such as GE Lighting Solutions LLC and the General Electric Company. His contributions to the field have positioned him as a leading figure within the lighting technology sector, where he continues to push the boundaries of innovation.
Collaborations
Collaborating with talented professionals has been a significant aspect of Ashfaqul's journey. Notable coworkers include Gary Robert Allen and James Edward Murphy, with whom he has shared ideas and worked on various groundbreaking projects throughout his career.
Conclusion
In summary, Ashfaqul Islam Chowdhury's extensive patent portfolio and significant contributions to lighting technology underscore his role as a pioneer in the field. His innovative spirit and dedication to advancing illumination solutions continue to inspire and shape the industry.