Company Filing History:
1 out of 2 
1 out of 1 Years Active: 1986-1990
Title: Louis Cognet: Innovator in Surface State Detection and Liquid-Liquid Extraction
Introduction
Louis Cognet is a notable inventor based in Le Vesinet, France. He has made significant contributions to the fields of surface state detection and liquid-liquid extraction. With a total of 2 patents, his work showcases innovative methods and apparatuses that enhance efficiency in various applications.
Latest Patents
Cognet's latest patents include a method and device for detecting changes in a surface state. This invention focuses on monitoring surfaces, particularly those in contact with flowing liquids at varying temperatures. The method involves placing a reference metal body in the liquid, which has an independently adjustable surface temperature. The detection of the surface state is achieved by measuring the intensity of light radiation reflected from the reference body.
Another significant patent is an apparatus for liquid-liquid extraction using a mixing/settling process. This apparatus features a vertical column with a rotary element that facilitates co-current contact between an extraction liquid and the liquid from which impurities are to be removed. The design includes a settling compartment that maintains a constant level of extraction liquid, ensuring efficient operation.
Career Highlights
Throughout his career, Louis Cognet has worked with prominent companies, including Société Lyonnaise des Eaux and Société Lyonnaise des Eaux et de l'Éclairage. His experience in these organizations has contributed to his expertise in developing innovative solutions in his field.
Collaborations
Cognet has collaborated with notable individuals such as Jean-Marie Gabriel and Robert Semet. These partnerships have likely enriched his work and led to advancements in his inventions.
Conclusion
Louis Cognet's contributions to innovation in surface state detection and liquid-liquid extraction demonstrate his commitment to advancing technology. His patents reflect a deep understanding of practical applications that can benefit various industries.