Ronald L Fielden

Title: The Innovative Mind of Ronald L. Fielden

Ronald L. Fielden is a notable inventor based in Irving, TX (US). He has made significant contributions to the field of telecommunications, particularly with his innovative approach to cellular phone technology. His work has paved the way for enhanced security measures in mobile devices.

Latest Patents

Ronald L. Fielden holds a patent for a "Cellular Phone Subsidy Lock." This invention ensures that a cellular phone, sold to an end-user at a price subsidized by a cellular carrier, is activated only on the subsidizing carrier's network. The technology involves a secure carrier code, which is programmed into the cellular phone by the manufacturer. The phone is shipped in a locked condition, preventing unauthorized programming of the Number Assignment Module (NAM) without a valid unlock or remove lock code. Upon activation, the phone's Electronic Serial Number (ESN) is entered into the carrier's system, which utilizes the ESN and carrier code to execute a subsidy lock algorithm. This algorithm generates unlock and remove lock codes, allowing the end user to access the phone's full functionality.

Career Highlights

Ronald L. Fielden is associated with NEC America, Inc., where he has contributed his expertise in telecommunications. His work has been instrumental in developing secure mobile communication technologies that protect both carriers and consumers.

Collaborations

Due to space constraints, the details of Ronald L. Fielden's collaborations will not be included.

Conclusion

Ronald L. Fielden's innovative contributions to cellular technology demonstrate his commitment to enhancing mobile security. His patent for the Cellular Phone Subsidy Lock is a testament to his ingenuity and the impact of his work in the telecommunications industry.