Location History:
- St Louis, MO (US) (1990)
- St. Louis, MO (US) (1991)
- Mechanicsville, VA (US) (1999 - 2012)
Company Filing History:
5 out of 1,362 
2 out of 98 
2 out of 333 
Years Active: 1990-2012
Title: Innovations of Gregory P. Liesen
Introduction
Gregory P. Liesen is a notable inventor based in Mechanicsville, VA, with a significant contribution to the field of lubricating oil technology. He holds a total of 10 patents, showcasing his expertise and innovative spirit in developing advanced solutions for petroleum viscosity measurement and oil compositions.
Latest Patents
One of Liesen's latest patents is focused on a petroleum viscosity measurement and communication system and method. This invention presents an apparatus and method for measuring the viscosity of lubricating oil using a piezo-resistive cantilever sensor. The sensor is designed to sense a first oil viscosity parameter by receiving pressure exerted by the lubricating oil. The cantilever features resistive portions that communicate with an electrical circuit to create an output signal indicative of changes in resistive characteristics. This output signal is crucial for determining oil viscosity and assessing the quality of lubricating oil.
Another significant patent involves oil-soluble molybdenum derivatives derived from hydroxyethyl-substituted Mannich bases. This disclosure relates to organic molybdenum complexes that can be utilized in lubricating oil compositions as antioxidants, deposit control additives, and friction modifiers. These complexes are designed to minimize the tendency to color finished oils, enhancing their performance and appeal.
Career Highlights
Throughout his career, Gregory P. Liesen has worked with prominent companies such as Ethyl Corporation and Ethyl Petroleum Additives, Inc. His experience in these organizations has contributed to his development of innovative solutions in the petroleum industry.
Collaborations
Liesen has collaborated with notable professionals in his field, including William Y. Lam and Sanjay Srinivasan. These collaborations have likely enriched his work and led to advancements in lubricating oil technologies.
Conclusion
Gregory P. Liesen's contributions to the field of lubricating oil technology through his patents and collaborations highlight his innovative approach and dedication to improving oil compositions. His work continues to influence the industry and pave the way for future advancements.