Company Filing History:

10 out of 838

Philips Electronics North America Corporation

patents

3 out of 21,384

Koninklijke Philips Corporation N.V.

patents

Years Active: 1995-2004

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6680582 - System and method for employing pulse width modulation for reducing vertical segregation in a gas discharge lamp (2004-01-20),

2. 6653799 - System and method for employing pulse width modulation with a bridge frequency sweep to implement color mixing lamp drive scheme (2003-11-25),

3. 6489731 - Power supply and/or ballast system controlled by desired load power spectrum (2002-12-03),

4. 5965976 - Gas discharge lamps fabricated by micromachined transparent substrates (1999-10-12),

5. 5955838 - Gas discharge lamps and lasers fabricated by micromachining methodology (1999-09-21),

6. 5919070 - Vacuum microelectronic device and methodology for fabricating same (1999-07-06),

7. 5811935 - Discharge lamp with T-shaped electrodes (1998-09-22),

8. 5808410 - Flat panel light source for liquid crystal displays (1998-09-15),

9. 5796209 - Gas discharge lamps and lasers fabricated by michromachining (1998-08-18),

10. 5624293 - Gas discharge lamps and lasers fabricated by micromachining methodology (1997-04-29),

11. 5598052 - Vacuum microelectronic device and methodology for fabricating same (1997-01-28),

12. 5574327 - Microlamp incorporating light collection and display functions (1996-11-12),

13. 5438343 - Gas discharge displays and methodology for fabricating same by (1995-08-01),

Title: The Innovative Contributions of David A Cammack

Introduction

David A Cammack is a notable inventor based in Scarborough, NY (US), recognized for his significant contributions to the field of gas discharge lamps. With a total of 13 patents to his name, Cammack has developed innovative systems that enhance the performance and efficiency of lighting technologies.

Latest Patents

Among his latest patents, Cammack has introduced a "System and method for employing pulse width modulation for reducing vertical segregation in a gas discharge lamp." This invention involves a bridge circuit that provides a pulse voltage signal, along with a controller that generates a pulse width modulated signal corresponding to a desired waveform. A filter circuit is utilized to receive and filter the pulse voltage signal, ensuring optimal performance of the lamp. Another significant patent is the "System and method for employing pulse width modulation with a bridge frequency sweep to implement color mixing lamp drive scheme." This system drives a gas discharge lamp using a bridge circuit that produces a pulse voltage signal, which is pulse width modulated at an operational frequency. The controller in this system is designed to generate a frequency swept signal that is amplitude modulated, enhancing the functionality of the gas discharge lamp.

Career Highlights

Cammack has had a distinguished career, working with prominent companies such as Philips Electronics North America Corporation and Koninklijke Philips Corporation N.V. His work in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in lighting technology.

Collaborations

Throughout his career, Cammack has collaborated with talented individuals, including Babar Ali Khan and Ronald D Pinker. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies in the field.

Conclusion

David A Cammack's contributions to the field of gas discharge lamps through his innovative patents and collaborations highlight his role as a significant inventor. His work continues to influence advancements in lighting technology, showcasing the importance of innovation in this industry.

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