logo

For the Inventor, By the Inventor

Simi Valley, CA, United States of America

Herman M Drees

This inventor holds 4 USPTO granted patents. Top assignees: Aerovironment, Inc., Other. Active years: 1979-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Herman M Drees. Retrieved from https://idiyas.com/inventor/herman-m-drees

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

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 198(Granted Patents)


Location History:

  • Marstons Mills, MA (US) (1979)
  • Simi Valley, CA (US) (1991 - 1994)

Company Filing History:

goldMedal2 out of 429 
 
Aerovironment, Inc.
 patents
silverMedal2 out of 834,513 
Other
 patents

Years Active: 1979-1994

Loading Chart...
4 patents (USPTO):Explore Patents
1. 5297759 - Rotary aircraft passively stable in hover (1994-03-29),
2. 5082079 - Passively stable hovering system (1992-01-21),
3. 5070955 - Passively stable hovering system (1991-12-10),
4. 4180367 - Self-starting windmill energy conversion system (1979-12-25),

Title: Innovations of Herman M Drees

Introduction

Herman M Drees is a notable inventor based in Simi Valley, CA (US). He has made significant contributions to the field of rotary aircraft technology. With a total of 4 patents to his name, Drees has demonstrated a commitment to advancing aviation innovation.

Latest Patents

One of Drees's latest patents is for a "Rotary aircraft passively stable in hover." This invention features a cylindrically tubular hub that mounts a plurality of outwardly extending, resiliently flexible blades. The blades are uniformly spaced around the hub and fixed in pitch, with outer tips that are downwardly and outwardly turned to balance lift generated during hover. This design provides passive stability to the aircraft. Additionally, he has developed a "Passively stable hovering system," which includes multiple upright ducts and fluid momentum generators to ensure stability during hover.

Career Highlights

Throughout his career, Drees has worked with various companies, including Aerovironment, Inc. His work has focused on creating innovative solutions for rotary aircraft, showcasing his expertise in the field.

Collaborations

Drees has collaborated with notable individuals such as William D Watson and Charles J Sink. These partnerships have contributed to the development of his innovative technologies.

Conclusion

Herman M Drees is a distinguished inventor whose work in rotary aircraft technology has led to several patents and advancements in aviation. His innovative designs continue to influence the industry and pave the way for future developments.

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]
Loading…