Joon Chang
58Patents
7h-index
75Co-inventors
75Inventor score
Filing activity: Sep 7, 2000 → Nov 14, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7440966B2 | Method and apparatus for file system snapshot persistence | Emerging Cross-Sectional Technologies | 129 | Expired |
| US6850929B2 | System and method for managing file system extended attributes | Emerging Cross-Sectional Technologies | 45 | Expired |
| US7472138B2 | System and method for handing input/output errors during recovery of journaling files in a data processing system | Physics | 18 | Expired |
| US7284019B2 | Apparatus, system, and method for differential backup using snapshot on-write data | Emerging Cross-Sectional Technologies | 14 | Expired |
| US7778961B2 | Delayed deletion of extended attributes | Emerging Cross-Sectional Technologies | 13 | Active |
| US8180638B2 | Method for emotion recognition based on minimum classification error | Physics | 7 | Active |
| US7702662B2 | Method and system for handling reallocated blocks in a file system | Physics | 7 | Active |
| US8458181B2 | Distributed free block map for a clustered redirect-on-write file system | Physics | 6 | Active |
| US9886430B2 | Entity based content selection | Physics | 6 | Active |
| US8306950B2 | Managing data access requests after persistent snapshots | Physics | 4 | Active |
| US8650158B2 | File cloning across different filesets | Physics | 4 | Active |
| US6625614B1 | Implementation for efficient access of extended attribute data | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8396832B2 | Independent fileset generations in a clustered redirect-on-write filesystem | Physics | 4 | Active |
| US7958325B2 | Handling temporary files in a file system with snapshots | Physics | 4 | Active |
| US8195611B2 | Using a sparse file as a clone of a file | Physics | 4 | Active |
| US8578283B2 | Suppressing unwanted UI experiences | Physics | 3 | Active |
| US7340487B2 | Delayed deletion of extended attributes | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9536539B2 | Nonlinear acoustic echo signal suppression system and method using volterra filter | Physics | 3 | Active |
| US8495112B2 | Distributed file hierarchy management in a clustered redirect-on-write file system | Physics | 3 | Active |
| US11854554B2 | Method and apparatus for combined learning using feature enhancement based on deep neural network and modified loss function for speaker recognition robust to noisy environments | Physics | 3 | Active |
| US7213244B2 | Apparatus and method for distribution of work on a doubly linked list among processing threads | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6732248B2 | System and method for ghost offset utilization in sequential byte stream semantics | Physics | 2 | Expired |
| US8626713B2 | Multiple contexts in a redirect on write file system | Physics | 2 | Active |
| US8904006B2 | In-flight block map for a clustered redirect-on-write filesystem | Physics | 2 | Active |
| US7200686B2 | Method, apparatus, and program product for facilitating serialization of input/output requests to a logical volume allowing nonserialized input/output requests | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.