Ruemmelsheim, Germany

Stefan Schäfer

This inventor holds 1 USPTO granted patent. Top assignee: Vacuumschmelze Gmbh & Company Kg. Active years: 2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Stefan Schäfer. Retrieved from https://idiyas.com/inventor/stefan-schäfer-2278w7xd

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 33(Granted Patents)


Company Filing History:


Years Active: 2006

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1 patent (USPTO):Explore Patents

Title: The Innovations of Stefan Schäfer

Introduction

Stefan Schäfer is a notable inventor based in Rümmelsheim, Germany. He has made significant contributions to the field of electrical engineering, particularly in the development of current transformers. His innovative approach has led to the creation of a unique device that enhances the functionality of compensating current sensors.

Latest Patents

Stefan Schäfer holds a patent for a "Current transformer for a compensating current sensor." This invention features a current transformer that includes a primary conductor, a secondary winding, and a soft-magnetic core. The primary conductor and secondary winding are electrically insulated from each other while being magnetically coupled through the core. The design allows for a current to be detected in the primary conductor, with a compensating current injected into the secondary winding. Additionally, an extra conductor is connected in parallel to the primary winding, positioned in the core area where a flux rise occurs. This configuration helps to partially compensate for the flux generated by the current flowing in the additional conductor.

Career Highlights

Stefan Schäfer is associated with Vacuumschmelze GmbH & Company KG, a company known for its advancements in magnetic materials and technologies. His work at this organization has allowed him to focus on innovative solutions in the field of electrical engineering.

Collaborations

Stefan has collaborated with esteemed colleagues such as Norbert Preusse and Friedrich Lenhard. Their combined expertise has contributed to the successful development of various projects within the company.

Conclusion

Stefan Schäfer's contributions to the field of electrical engineering, particularly through his patented innovations, demonstrate his commitment to advancing technology. His work continues to influence the design and functionality of current transformers, showcasing the importance of innovation in engineering.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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