This inventor holds 2 USPTO granted patents. Top assignees: Martin Marietta Energy Systems, Inc., The United States of America as Represented by the United States. Active years: 1984-1990.
Company Filing History:
1 out of 266 
1 out of 3,975 
Years Active: 1984-1990
Title: Charles H. Nowlin: Innovator in Ultrasonic Technology
Introduction
Charles H. Nowlin is a notable inventor based in Oak Ridge, TN (US). He has made significant contributions to the field of ultrasonic technology, holding a total of 2 patents. His work has advanced the capabilities of surveying and data telemetry systems.
Latest Patents
One of Nowlin's latest patents is an "Ultrasonic ranging and data telemetry system." This innovative system determines a surveyor's position and automatically links it with other simultaneously taken survey data. The system utilizes an ultrasonic and radio frequency (RF) transmitter carried by the surveyor in a backpack. The surveyor's position is calculated using the measured transmission times of an airborne ultrasonic pulse sent from the backpack to two or more prepositioned ultrasonic transceivers. RF communications are employed to synchronize the ultrasonic pulse transmission-time measurements and to transmit additional survey data. A portable receiver and microcomputer, brought to the property site, interpret the RF communications. A video display connected to the computer provides real-time visual monitoring of the survey progress and site coverage.
Another significant patent is for "Amplitude- and rise-time-compensated filters." This invention is an amplitude-compensated rise-time-compensated filter for a pulse time-of-occurrence (TOOC) measurement system. The filter converts an input pulse with random amplitudes and non-zero rise times into a bipolar output pulse. The output pulse has a zero-crossing time that is independent of the rise time and amplitude of the input pulse. This filter differentiates the input pulse along its linear leading edge and subtracts a pulse that is fractionally proportional to the input pulse. The design allows for the use of discrete circuit components while avoiding delay lines.
Career Highlights
Throughout his career, Charles H. Nowlin has worked with prominent organizations, including Martin Marietta Energy Systems, Inc. and the United States of America as represented by the United States. His work in these institutions has contributed to advancements in technology and innovation.
Collaborations
Nowlin has collaborated with notable coworkers such as Hugh R. Brashear and Michael S. Blair. Their combined expertise has likely fostered an environment of innovation and creativity in their projects.
Conclusion
Charles H. Nowlin's contributions to ultrasonic technology and data telemetry systems have made a lasting impact in the field.