Location History:
- Cupertino, CA (US) (1996)
- Berwyn, PA (US) (1996)
- Evington, VA (US) (1998)
- Philadelphia, PA (US) (1998)
- Wayne, PA (US) (1997 - 2002)
- Marriottsville, MD (US) (2002 - 2004)
- Clarksville, MD (US) (2004 - 2021)
Company Filing History:
4 out of 4 
4 out of 4 
2 out of 2 Years Active: 1996-2021
Title: The Innovations of Charles R Abraham
Introduction
Charles R Abraham is a notable inventor based in Cupertino, CA, with a remarkable portfolio of 18 patents. His work primarily focuses on advanced communication technologies, particularly in the realm of data transmission.
Latest Patents
One of his latest inventions is a frequency modulated Orthogonal Frequency Division Multiplexing (OFDM) process. This innovative modulation technique enables high-speed data communications over various transmission media and networks. The process is implemented with a modem device that includes both a modulator and demodulator, facilitating communication with multiple modem devices across different communication media. This includes physical transmission mediums such as power lines, wireless (air), cable, or twisted pairs.
Career Highlights
Throughout his career, Charles has made significant contributions to the field of communication technology. His inventions have paved the way for more efficient data transmission methods, enhancing the capabilities of modern communication systems.
Collaborations
Charles has worked alongside notable colleagues such as John Jarels and Chris Reinert, contributing to various projects that have furthered advancements in communication technologies.
Conclusion
Charles R Abraham's innovative work in communication technology continues to impact the industry significantly. His contributions, particularly in high-speed data communication, showcase his expertise and dedication to advancing technology.