Company Filing History:
1 out of 583 
1 out of 541 
Years Active: 2002-2003
Title: Christian O Johnson: Innovator in Vehicle Access Systems
Introduction
Christian O Johnson is a notable inventor based in Rochester Hills, MI (US). He has made significant contributions to the field of vehicle access systems, holding a total of 2 patents. His innovative designs focus on enhancing vehicle security and user convenience.
Latest Patents
One of Johnson's latest patents is an electronic key system that includes ignition and transmission control. This vehicle access system ensures that the vehicle transmission is in the proper condition before power to the selected vehicle components is turned off. A control panel within the vehicle allows the driver to activate a switch indicating a desire to turn off the vehicle engine. The controller first determines whether a valid authentication code is received from a passive signaling device. Once validation is complete, the controller turns off the engine. If the transmission must be switched to the appropriate gear, the controller provides an indication to the driver that the transmission must be switched before the power to the accessory components will be turned off.
Another patent is for a smart card system with a card-in-vehicle warning. This system includes controls that ensure that a request for a change in the status of a vehicle is consistent with the presence of an appropriate card in the vehicle. For example, prior to stopping ignition upon the request for stopping ignition, a sensor will look for the presence of a valid card within the vehicle cab. If no valid card is identified, a warning signal is sent to the operator, preventing them from stopping the vehicle if any appropriate cards have left the vehicle.
Career Highlights
Christian O Johnson has worked with prominent companies such as Siemens VDO Automotive Corporation and Siemens Automotive Corporation. His experience in these organizations has contributed to his expertise in developing innovative vehicle access technologies.
Collaborations
Johnson has collaborated with notable coworkers, including David T Proefke and Thomas E Utter. Their combined efforts have likely fostered advancements in the automotive technology sector.
Conclusion
Christian O Johnson is a distinguished inventor whose work in vehicle access systems has led to significant innovations. His patents reflect a commitment to enhancing vehicle security and user experience.