Location History:
- Bueharest, RO (2018)
- Bucharest, RO (2010 - 2020)
Company Filing History:
9 out of 15,608 
1 out of 38 
1 out of 8 Years Active: 2010-2020
Title: The Innovative Mind of Stefan Dan Costea
Introduction
Stefan Dan Costea is a prominent inventor based in Bucharest, Romania. He has made significant contributions to the field of sensor technology, holding a total of 11 patents. His work focuses on developing advanced humidity sensors and condensation detection systems, showcasing his expertise in electronic engineering.
Latest Patents
One of his latest patents is a FET-based humidity sensor with a barrier layer protecting the gate dielectric. This innovative humidity sensor includes a substrate with a source and a drain, where the drain is laterally spaced from the source. A gate stack is positioned between the source and the drain to form a transistor. The gate stack features a gate insulator situated on the substrate, creating a gate insulator/substrate interface. Additionally, a barrier layer is placed above the gate insulator, acting as a barrier to mobile charge, humidity, and other contaminants. This design helps prevent these contaminants from reaching the gate insulator/substrate interface. The humidity sensing layer, located above the barrier layer, modulates the conduction channel in the substrate when exposed to humidity. The humidity level can be determined by monitoring the current flowing between the source and drain. Another notable patent involves condensation sensor systems and methods, which describe techniques for forming a condensation sensor by depositing a III-nitride on a substrate and implementing conductive contacts via a shadow mask.
Career Highlights
Stefan has worked with notable companies such as Honeywell International Inc. and Life Safety Distribution AG. His experience in these organizations has allowed him to refine his skills and contribute to cutting-edge technology in the field of sensors.
Collaborations
Stefan has collaborated with talented individuals, including Viorel Georgel Dumitru and Mihai Brezeanu. These partnerships have fostered innovation and creativity in his projects.
Conclusion
Stefan Dan Costea is a remarkable inventor whose work in humidity and condensation sensors has made a significant impact in the field of electronic engineering. His innovative patents and collaborations highlight his dedication to advancing technology.