Company Filing History:
2 out of 44 
1 out of 8,684 
Years Active: 1990-2016
Title: J Barry McManus: Innovator in Spectroscopy and Exhaust Gas Analysis
Introduction
J Barry McManus is a notable inventor based in Arlington, MA (US). He holds 3 patents that showcase his contributions to the fields of spectroscopy and environmental monitoring. His innovative work has significantly advanced the technology used in analyzing motor vehicle exhaust gases and enhancing spectroscopic measurements.
Latest Patents
One of McManus's latest patents is an "Optical multi-pass cell for long path-length spectroscopy." This invention features an improved multi-pass cell designed to include a perturbing mirror that facilitates multiple reflections, enhancing the efficiency of long path-length spectrometers. The design allows for a base pattern of reflections to be rotated about the axis, optimizing the circulation of light within the cell.
Another significant patent is the "Laser system for cross-road measurement of motor vehicle exhaust gases." This system employs tunable infrared laser differential absorption spectroscopy to accurately measure the concentration of exhaust gases. By utilizing spectroscopic constants, the system calculates absolute column densities, providing critical data for assessing vehicle emissions.
Career Highlights
Throughout his career, McManus has worked with prominent organizations, including Aerodyne Research, Inc. and the U.S. Government as represented by the Secretary of the Army. His work in these institutions has allowed him to develop and refine his innovative technologies, contributing to advancements in environmental science and engineering.
Collaborations
McManus has collaborated with notable colleagues such as David D Nelson, Jr. and Mark Stuart Zahniser. These partnerships have fostered a collaborative environment that has led to significant advancements in their respective fields.
Conclusion
J Barry McManus is a distinguished inventor whose work in spectroscopy and exhaust gas analysis has made a lasting impact. His innovative patents reflect his commitment to advancing technology for environmental monitoring and analysis.