Location History:
- Park Ridge, IL (US) (1995)
- Sayre, PA (US) (1992 - 1996)
Company Filing History:
Years Active: 1992-1996
Title: Innovations of David B Hedden in X-ray Technology
Introduction
David B Hedden is a notable inventor based in Sayre, PA (US). He has made significant contributions to the field of X-ray technology, holding a total of 5 patents. His work focuses on improving the efficiency and effectiveness of X-ray evaluation apparatuses and phosphor materials.
Latest Patents
Among his latest patents, one is titled "X-ray intensifying screens with mixed morphology phosphors." This invention involves an X-ray evaluation apparatus that enhances film resolution while maintaining a constant coating weight and speed. The phosphor-binder layer is coated on a support, utilizing a rare earth tantalate phosphor that consists of 5-80% tabular morphology with an average aspect ratio of about 2:1, while the remainder features a polyhedral morphology. Another significant patent is "Flux for phosphor particle size control." This patent describes an improved flux for preparing X-ray phosphors, which includes an alkali metal sulfate, an alkali metal metaborate, and a strontium halide. By adjusting the concentrations of the metaborate and strontium halide, the size and dry bulk density of the phosphor particles can be controlled, along with the speed of the phosphor. The patent also outlines a process for making phosphors using this flux, as well as X-ray intensifying screens that incorporate these phosphors.
Career Highlights
David B Hedden is associated with E.I. du Pont de Nemours and Company, where he has been able to apply his innovative ideas in a corporate setting. His work has significantly advanced the field of X-ray technology, making it more efficient and effective for various applications.
Collaborations
Throughout his career, David has collaborated with notable colleagues such as William J Zegarski and Constantine D Markellos. These collaborations have likely contributed to the success and development of his innovative patents.
Conclusion
David B Hedden's contributions to X-ray technology through his patents demonstrate his commitment to innovation and improvement in the field. His work continues to influence the industry and enhance the capabilities of X-ray evaluation systems.