Company Filing History:
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1 out of 5,349 
Years Active: 1986-1993
Title: Innovations of John Henry Thomas, III
Introduction
John Henry Thomas, III is a notable inventor based in Holland, PA (US). He has made significant contributions to the field of plasma processing, holding a total of 3 patents. His work focuses on enhancing the efficiency and accuracy of plasma reactors, which are essential in various industrial applications.
Latest Patents
One of his latest patents is titled "Apparatus and method for determining power in plasma processing." This invention includes a current sensor with a radiation emitter and a radiation detector, designed to accurately sense the current flowing to a plasma generating electrode from a radio frequency (RF) power source. The use of a high emissivity infrared coating on the resistor enhances the efficiency of the current sensor. The infrared detector provides precise measurements of the average or root-mean-square current without introducing parasitic capacitance into the measurement circuit. Additionally, a voltage sensor and a second current sensor allow for the calculation of power delivered to the plasma generating electrode.
Another significant patent is the "Triode plasma reactor with phase modulated plasma control." This invention features a triode plasma reactor with three electrodes that form plasma in a reaction chamber from a reactant gas. It includes a phase modulated potential generator that creates time-varying potentials on the second and third electrodes, which are phase modulated versions of each other. This innovation allows for a new dimension of time-varying control for the reactor, with phase modulation achievable at various frequencies.
Career Highlights
Throughout his career, John Henry Thomas, III has worked with several organizations, including the Association Institutions for Material Sciences, Inc. and the Consortium for Surface Processing, Inc. His expertise in plasma processing has made him a valuable asset in these institutions.
Collaborations
He has collaborated with notable professionals in his field, including Bawa Singh and Grzegorz Kaganowicz. Their combined efforts have contributed to advancements in plasma technology and processing.
Conclusion
John Henry Thomas, III is a distinguished inventor whose work in plasma processing has led to innovative solutions that enhance efficiency and accuracy in industrial applications. His contributions continue to impact the field positively.
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