This inventor holds 4 USPTO granted patents and 1 published patent application. Top assignees: Lawrence Livermore National Security, LLC, University of California. Active years: 2000-2019.
Company Filing History:
3 out of 1,624 
1 out of 16,008 
Years Active: 2000-2019
Title: The Innovations of Jeffrey S Kallman
Introduction
Jeffrey S Kallman is an accomplished inventor based in Pleasanton, CA (US). He holds a total of 4 patents that showcase his expertise in material characterization and computational methods. His work has significantly contributed to advancements in the field of dual-energy computed tomography.
Latest Patents
One of Kallman's latest patents is titled "System-independent characterization of materials using dual-energy computed tomography." This innovative system characterizes the material of an object scanned via a dual-energy computed tomography scanner. It generates photoelectric and Compton sinograms based on a photoelectric-Compton decomposition of low-energy and high-energy sinograms generated from the scan. The system also generates a Compton volume with Compton attenuation coefficients and a photoelectric volume with photoelectric attenuation coefficients. This information is crucial for mapping known effective atomic numbers and known electron densities to known materials.
Another notable patent is "Approximate error conjugation gradient minimization methods." This method involves selecting a subset of rays from a set of all rays for error calculation in a constrained conjugate gradient minimization problem. The system calculates an approximate error using the selected subset and determines a minimum in a conjugate gradient direction based on this error. This innovation has applications in various computational problems.
Career Highlights
Kallman has worked with prestigious organizations such as Lawrence Livermore National Security, LLC and the University of California. His experience in these institutions has allowed him to collaborate with leading experts in his field and contribute to significant research and development projects.
Collaborations
Some of Kallman's notable coworkers include Isaac Seetho and Maurice B Aufderheide. Their collaborative efforts have further enhanced the impact of Kallman's inventions and research.
Conclusion
Jeffrey S Kallman is a prominent inventor whose work in material characterization and computational methods has led to significant advancements in technology. His contributions continue to influence the field and inspire future innovations.