Company Filing History:
Years Active: 1989-1996
Title: David R. Hertling: Innovator in Electrical Conductivity Testing
Introduction
David R. Hertling is a notable inventor based in Stone Mountain, Georgia. He has made significant contributions to the field of electrical conductivity testing, holding three patents that showcase his innovative approach to measuring electrical properties of materials.
Latest Patents
Hertling's latest patents include an electrical conductivity tester and methods for accurately measuring time-varying electrical conductivity. The first embodiment of his invention involves monitoring the transmission phase of a probe circuit to determine the conductivity of a test material. An oscillator circuit generates a reference oscillator signal, which is modified through electromagnetic induction to derive a modified transmission phase signal. A phase detector circuit then combines these signals to produce a transmission phase signal that is directly convertible to conductivity. The second embodiment features an amplifier connected to the probe circuit, forming an oscillator circuit that generates an oscillator signal in response to the magnetic coupling with the test material. A frequency discriminator then generates a frequency signal from this oscillator signal, which is also convertible to conductivity.
Career Highlights
David R. Hertling is associated with the Georgia Tech Research Corporation, where he continues to advance his research and development in electrical conductivity testing. His work has been instrumental in enhancing the accuracy and efficiency of conductivity measurements.
Collaborations
Hertling has collaborated with notable colleagues, including Robert K. Feeney and Ajeet Rohatgi, contributing to a dynamic research environment that fosters innovation and technological advancement.
Conclusion
David R. Hertling's contributions to electrical conductivity testing exemplify his commitment to innovation in the field. His patents reflect a deep understanding of electrical properties and a dedication to improving measurement techniques.