Company Filing History:
4 out of 14,087 
2 out of 14 
1 out of 2 Years Active: 1982-1992
Title: Roger P Alexis: Innovator in Communication Technology
Introduction
Roger P Alexis is a notable inventor based in Neuilly sur Seine, France. He has made significant contributions to the field of communication technology, holding a total of seven patents. His work focuses on optimizing signal transmission and improving mobile radio systems.
Latest Patents
One of his latest patents is a transceiver arrangement for optimizing received signal levels. This invention involves an information transmission arrangement comprising transceiver units located in a propagation medium whose attenuation varies as a function of frequency. The arrangement includes a meter for measuring the level of the received signal, which influences the frequency variation control of the control oscillator in the send circuit of the other unit. This innovative design takes advantage of a monotonic attenuation gradient of the propagation medium to control the send level effectively.
Another significant patent by Roger P Alexis is a method and apparatus for selecting a free channel in a mobile radio system. This invention enables a mobile station to select a free duplex communication channel for communication with a fixed station. The fixed stations detect engaged duplex channels and transmit a list over a signaling path. The mobile station measures power levels of the received signals and identifies free duplex channels by excluding those that are engaged or interfering.
Career Highlights
Throughout his career, Roger P Alexis has worked with prominent companies such as U.S. Philips Corporation and Telecommunications Radioelectriques Et Telephoniques. His experience in these organizations has contributed to his expertise in communication technologies and innovations.
Collaborations
Roger P Alexis has collaborated with notable individuals in his field, including Bahman Barazeche and Loic B Guidoux. These collaborations have likely enriched his work and led to further advancements in communication technology.
Conclusion
Roger P Alexis is a distinguished inventor whose work in communication technology has led to several impactful patents. His innovative approaches to signal transmission and mobile radio systems continue to influence the industry.