Location History:
- Berkeley, CA (US) (2008 - 2013)
- Vancouver, WA (US) (2014 - 2015)
Company Filing History:
3 out of 27,427 
2 out of 3 Years Active: 2008-2015
Title: The Innovations of Michael J Callahan
Introduction
Michael J Callahan is a notable inventor based in Berkeley, CA. He has made significant contributions to the field of technology, particularly in file systems. With a total of 5 patents, his work has had a lasting impact on how data is managed and stored.
Latest Patents
One of his latest patents is titled "Managing counters in a distributed file system." This method divides a cluster file system into multiple segments, each containing one or more local counters. The method checks for inconsistencies and corrects any discovered inconsistencies in each of the local counters while the file system remains online and available for use. Another significant patent is "Enumerating metadata in file system directories." This method stores metadata about files separately from directories and represents the directories as a tree structure. Each entry refers to separate storage blocks that include the metadata, with each block storing metadata for only a single file.
Career Highlights
Throughout his career, Michael has worked with prominent companies such as Hewlett-Packard Development Company, L.P. and Clickshare Service Corporation. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects.
Collaborations
Michael has collaborated with notable individuals in the industry, including David M Oliver and William P Densmore. These collaborations have further enriched his work and expanded his influence in the field.
Conclusion
Michael J Callahan's contributions to technology, particularly in file systems, demonstrate his innovative spirit and dedication to improving data management. His patents reflect a deep understanding of complex systems and a commitment to enhancing user experience.