Company Filing History:
12 out of 1,391 
6 out of 279 
1 out of 832,880 Years Active: 1999-2018
Title: **Ljubomir A. Kojovic: Innovator in Power Transformer Technology**
Introduction
Ljubomir A. Kojovic, based in Racine, WI, has made significant contributions to the field of electrical engineering. With a remarkable portfolio of 19 patents, Kojovic has demonstrated his expertise and innovation in developing technologies that enhance the efficiency and safety of power transformers.
Latest Patents
Among Kojovic's latest inventions is the "Power Transformer Inrush Current Detector." This patent outlines techniques for detecting inrush currents in power transformers. It involves monitoring signals from a Rogowski coil positioned on the current path and analyzing these signals to determine if an inrush current is present. An important feature of this invention is the ability to block the operation of a protective relay when inrush current is detected, thereby enhancing system reliability.
Another notable patent is for "Power Spike Mitigation." This invention describes a method and device that mitigates the effects of power spikes on protective devices. The system assesses input signals against a predefined threshold and manages signal flow over designated time periods to safeguard against harmful voltage levels, thus ensuring protective devices remain operational under adverse conditions.
Career Highlights
Throughout his career, Kojovic has worked with prominent companies in the electrical technology sector, including Cooper Technologies Company and McGraw-Edison Company. His experience in these companies provided him with the expertise needed to develop groundbreaking technologies that address complex challenges in the power industry.
Collaborations
Ljubomir A. Kojovic has collaborated with notable colleagues, including Jules Esztergalyos and Stephen E. Williams. These partnerships have likely spurred innovation and contributed to the success of the projects they undertook together, further highlighting the importance of teamwork in advancing technology.
Conclusion
Ljubomir A. Kojovic's impressive array of patents reflects his commitment to innovation in electrical engineering. His latest inventions, which offer solutions for detecting and mitigating power spikes, exemplify his ability to address critical challenges in the power transformer realm. As technology continues to evolve, the contributions of inventors like Kojovic remain essential in shaping a safer and more efficient future for electrical systems.