This inventor holds 2 USPTO granted patents. Top assignees: Preh Elektrofeinmechanische Werke Jakob Preh Nachf Gmbh & Co., Preh-Werke Gmbh Co. Kg. Active years: 1985-1990.
Company Filing History:
1 out of 49 
1 out of 70 Years Active: 1985-1990
Title: Friedhard Fehr: Innovator in Potentiometer and Capacitor Technology
Introduction
Friedhard Fehr is a notable inventor based in Lauter, Germany. He has made significant contributions to the fields of electronic components, particularly in the design of rotary potentiometers and thick-film capacitors. With a total of 2 patents to his name, Fehr's work showcases innovative approaches to traditional technologies.
Latest Patents
One of Fehr's latest patents is for a rotary potentiometer. This device features a cylindrical or partially cylindrical resistance track with at least one electrode pair arranged at the edges, parallel to the cylinder axis. A tap is fixed to an adjusting component that is rotatable around and movable along the cylinder axis. The axial breadth of the resistance track corresponds substantially to the stroke of the adjusting component along the cylinder axis. Additionally, at the circumferential edges of the resistance track, at least one second electrode pair is arranged.
Another significant patent is for a thick-film capacitor manufactured by printed-circuit techniques. This capacitor is designed for implementation through printed-circuit technology, which includes capacitors of this type along with the associated conducting paths. The dielectric of the capacitor comprises a screen-printable dispersion of dielectric filler substances in a polymeric material that can be cured at comparatively low temperatures. This innovation allows for lower curing temperatures, around 200°C, compared to conventional thick-film capacitors that require much higher firing temperatures. The production process involves depositing electrodes and conducting paths onto an activated base layer, resulting in solderable electrodes and conducting paths that adhere strongly to the substrate layers.
Career Highlights
Throughout his career, Friedhard Fehr has worked with several companies, including Preh-Werke GmbH Co. KG and Preh Elektrofeinmechanische Werke Jakob Preh Nachf GmbH & Co. These experiences have allowed him to refine his skills and contribute to advancements in electronic component technology.
Collaborations
Fehr has collaborated with notable individuals in his field, including Gottfried Berthold and Rudolf Limpert. These partnerships have likely enriched his work and led to further innovations in his projects.
Conclusion
Friedhard Fehr's contributions to the fields of rotary potentiometers and thick-film capacitors highlight his innovative spirit and technical expertise. His patents reflect a commitment to advancing electronic component technology, making him a