This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignees: Western Atlas International, Inc., Eaton Intelligent Power Limited. Active years: 1988-2026.
Company Filing History:
2 out of 392 
1 out of 2,508 
Years Active: 1988-2026
Title: Michael J Marsden: Innovator in Subsurface Formation Testing
Introduction
Michael J Marsden is a notable inventor based in Houston, TX (US). He has made significant contributions to the field of subsurface formation testing, holding a total of 3 patents. His work focuses on developing advanced apparatuses for collecting fluid samples from earth formations.
Latest Patents
Marsden's latest patents include a "Subsurface Formation Testing Apparatus" and a "Power Control System for Subsurface Formation Testing Apparatus." The first patent describes an apparatus designed to collect multiple fluid samples from formations traversed by a wellbore. It features a pressure sensor for deriving pressure measurements and a temperature sensor for simultaneous temperature measurements. The signals from these sensors are transmitted to processing circuitry using a narrow band frequency modulated scheme, allowing for real-time temperature compensated pressure measurements. The second patent outlines a system that includes control circuits for supplying power control signals to the subsurface instrument. This system establishes an electrical connection to the hydraulic power system and monitors current to prevent overloads.
Career Highlights
Marsden is currently employed at Western Atlas International, Inc., where he continues to innovate in the field of subsurface testing technologies. His work has been instrumental in enhancing the efficiency and accuracy of fluid sampling in geological formations.
Collaborations
Throughout his career, Marsden has collaborated with notable colleagues such as Wade M Johnson, Jr. and Dean C Minehart. These partnerships have contributed to the development of cutting-edge technologies in the industry.
Conclusion
Michael J Marsden is a distinguished inventor whose work in subsurface formation testing has led to significant advancements in the field. His patents reflect a commitment to innovation and excellence in engineering.