Company Filing History:
Years Active: 1977-1997
Title: John D. Whittenberger: Innovator in Composite Materials
Introduction
John D. Whittenberger is a notable inventor based in North Olmsted, OH (US). He has made significant contributions to the field of materials science, particularly in the development of advanced composite materials. With a total of 3 patents, his work has had a considerable impact on various applications.
Latest Patents
One of his latest patents is focused on a NiAl-base composite containing a high volume fraction of AlN. This innovative particulate reinforced NiAl-AlN composite alloy features a NiAl matrix with more than 13 volume percent fine particles of AlN. The particles are designed to have a diameter ranging from about 15 nanometers to about 50 nanometers. The preparation of this composite involves cryomilling prealloyed NiAl in liquid nitrogen, utilizing grinding media with diameters between 2 mm and 6 mm at impeller speeds of 450 RPM to 800 RPM. The cryomilling process lasts from 4 to 20 hours to achieve the desired cryomilled powder, which can then be consolidated to form the composite alloy. Additionally, the alloy may include a toughening alloy such as NiCrAlY, FeCrAY, or FeAl.
Another significant patent by Whittenberger is a method and apparatus for gripping uniaxial fibrous composite materials. This invention involves cutting a strip specimen from a unidirectional strong, brittle fiber composite material and grit-blasting the surfaces of both ends. The specimen is then placed between metal load transfer members, also with grit-blasted surfaces. Sufficient compressive stress is applied to prevent slippage during testing at both elevated and room temperatures.
Career Highlights
John D. Whittenberger works for the United States of America as represented by the Administrator. His career has been marked by a commitment to advancing the field of composite materials through innovative research and development.
Collaborations
Throughout his career, Whittenberger has collaborated with notable colleagues, including Mohan G. Hebsur and Carl E. Lowell. Their combined expertise has contributed to the success of various projects and patents.
Conclusion
John D. Whittenberger is a distinguished inventor whose work in composite materials has led to significant advancements in the field. His innovative patents reflect a deep understanding of materials science and a