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For the Inventor, By the Inventor

Ljubljana, Slovenia

Gregor Čretnik

This inventor holds 5 USPTO granted patents and 3 published patent applications. Top assignee: Pipistrel D.o.o.. Active years: 2025-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Gregor Čretnik. Retrieved from https://idiyas.com/inventor/gregor-cretnik

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

USPTO Granted Patents = 5 

% Patents Active = 80.0

Average Co-Inventor Count = 3.3

ph-index = 1


Company Filing History:

goldMedal5 out of 15 
 
Pipistrel D.o.o.
 patents

Years Active: 2025-2026

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5 patents (USPTO):Explore Patents
1. 12752910 - Multi-purpose attachment structure (2026-10-06),
2. 12703504 - Landing gear system, weight on wheels system and method for landing or taking-off (2026-08-11),
3. 12491995 - Vertical takeoff and landing aircraft (2025-12-09),
4. 12404004 - Wing-fuselage joint (2025-09-02),
5. 12325540 - Aircraft with multifunctional structure (2025-06-10),

Title: Gregor Čretnik: Innovator in Vertical Takeoff and Landing Aircraft

Introduction

Gregor Čretnik is a prominent inventor based in Ljubljana, Slovenia. He has made significant contributions to the field of aviation, particularly in the development of vertical takeoff and landing (VTOL) aircraft. With a total of 5 patents to his name, Čretnik continues to push the boundaries of innovation in aerospace technology.

Latest Patents

One of Čretnik's latest patents is for a vertical takeoff and landing aircraft. This VTOL aircraft boasts a maximum takeoff weight (MTOW) of approximately 1700 kg, a cruising speed of about 80 knots equivalent airspeed (EAS) to around 100 knots EAS, and a nominal range of about 300 km. It is designed for a nominal flight time of about 4 hours and features at least one pair of rotors configured to provide vertical thrust. Each rotor has an approximate 2-meter propeller diameter, a disk loading ranging from about 67 kg/m to about 110 kg/m, and operates at speeds between 1800 to 2700 rotations per minute (RPM).

Another notable patent is for a wing-fuselage joint for an aircraft. This innovative design includes joining members that feature both a first and a second configuration. The first configuration consists of a platform and bracket that can pivot in a lateral plane and translate in a longitudinal direction. The second configuration allows for pivoting in a longitudinal plane and translating in a lateral direction. These joining members effectively connect the fuselage structure and the spar of the aircraft.

Career Highlights

Gregor Čretnik is currently employed at Pipistrel d.o.o., a company known for its advancements in light aircraft and sustainable aviation solutions. His work at Pipistrel has positioned him as a key player in the development of innovative aircraft technologies.

Collaborations

Čretnik collaborates with talented individuals such as Rok Lapuh and Jernej Drofelnik, who contribute to the innovative projects at Pipistrel. Their combined expertise fosters a creative environment that drives the development of cutting-edge aviation solutions.

Conclusion

Gregor Čretnik is a visionary inventor whose work in vertical takeoff and landing aircraft is shaping the future of aviation. His patents and contributions to Pipistrel

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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