Company Filing History:
2 out of 16 
1 out of 832,812 Years Active: 2005-2008
Title: Innovations by Hansjörg Cueni
Introduction
Hansjörg Cueni is a notable inventor based in Stansstad, Switzerland. He has made significant contributions to the field of high-pressure liquid chromatography through his innovative designs and patents. With a total of three patents to his name, Cueni has established himself as a key figure in his area of expertise.
Latest Patents
One of Cueni's latest patents is the Sample Pipette. This device is specifically designed for injecting samples into high-pressure liquid chromatography apparatuses. It features a hollow needle for drawing samples and expelling them into a container or a sample receiving device. An interchangeable cannula is mounted on the hollow needle, allowing it to contain additional functional elements such as filters and chemically active phases.
Another significant patent is the Valve Arrangement. This invention comprises a predetermined number of individual valve functionalities arranged in parallel. It includes a fixed connector plate with sample funnel tubes and output connections for the forward transfer of samples. A valve plate with sample loops accommodates precisely measured sample amounts and can be displaced linearly with respect to the connector plate, allowing for efficient sample management.
Career Highlights
Throughout his career, Hansjörg Cueni has worked with various companies, including CTC Analytics AG. His work has focused on enhancing the efficiency and functionality of chromatography equipment, contributing to advancements in analytical chemistry.
Collaborations
Cueni has collaborated with notable individuals in his field, including Heiner Scherrer and Heinrich Scherrer. These collaborations have likely contributed to the development and refinement of his innovative inventions.
Conclusion
Hansjörg Cueni's contributions to the field of chromatography through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, showcasing the importance of innovation in scientific research.