Ladonna Sheree Hillis

Title: The Innovations of Ladonna Sheree Hillis

Introduction

Ladonna Sheree Hillis is an accomplished inventor based in Orlando, FL. She has made significant contributions to the field of materials science, particularly with her innovative work on alloys. Her dedication to research and development has led to the creation of a unique high strength low thermal expansion alloy.

Latest Patents

Ladonna holds a patent for a high strength low thermal expansion alloy. This alloy provides a low coefficient of thermal expansion, with a CTE of about 4.9 × 10⁻⁶ m/m/°C or less at 204°C, while maintaining relatively high strength. The composition of the alloy includes approximately 40.5 to 48% nickel, 2 to 3.7% niobium, 0.75 to 2% titanium, up to 1% aluminum, and a total of 3.7% or less of niobium plus tantalum, with the balance being iron and incidental impurities. The alloys can be aged to achieve a Rockwell C hardness of at least about 30.

Career Highlights

Ladonna is currently employed at Inco Alloys International, Inc., where she continues to innovate and develop advanced materials. Her work has not only contributed to her company but has also advanced the field of alloy research.

Collaborations

Ladonna collaborates with talented individuals such as John S. Smith and Melissa A. Moore, who contribute to her projects and research endeavors.

Conclusion

Ladonna Sheree Hillis exemplifies the spirit of innovation in materials science through her patented work on high strength low thermal expansion alloys. Her contributions are paving the way for advancements in this critical field.