Company Filing History:
3 out of 24,200 
2 out of 16,093 Years Active: 1994-2008
Title: David A Nation: Innovator in Hierarchical Information Visualization
Introduction
David A Nation is an accomplished inventor based in Hanover, MD (US). He has made significant contributions to the field of information visualization, particularly in the development of systems that enhance user interaction with large collections of hierarchically linked information. With a total of 5 patents to his name, his work has had a notable impact on how information is presented and navigated in digital environments.
Latest Patents
Among his latest patents is a system and method for browsing hierarchically based node-link structures based on an estimated degree of interest. This innovative method enables users to view extensive collections of hierarchically linked information on a computer-based display. A tree structure visualization is created, presenting a complete representation of the information collection without the need for scrolling. The visualization is based on identified focus nodes and the calculation of a Degree of Interest (DOI) for each node within the structure. The layout and presentation of this visualization are determined by DOI values, taking into account the available display space. Users can dynamically manipulate views of the structure by selecting one or more focus nodes, prompting a recalculation of the degree of interest.
Career Highlights
David A Nation has worked with notable organizations, including Xerox Corporation and the United States Navy. His experience in these companies has allowed him to refine his skills and contribute to significant advancements in information technology and visualization.
Collaborations
Throughout his career, David has collaborated with esteemed colleagues such as Stuart Kent Card and Thomas F Wescott. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.
Conclusion
David A Nation's contributions to the field of information visualization demonstrate his commitment to enhancing user experience through innovative technology. His patents reflect a deep understanding of how to effectively present complex information in an accessible manner.