Inventor
CHANG HUNG-JEN
TW25 patents
⚠️ This page may combine multiple inventors who share the name “CHANG HUNG-JEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PROOFPOINT INC
16 patentsUS11636161B1Apr 25, 2023
Intelligent clustering systems and methods useful for domain protection
PROOFPOINT INC16 citations85
US11956272B2Apr 9, 2024
Identifying legitimate websites to remove false positives from domain discovery analysis
PROOFPOINT INC1 citations72
US11539745B2Dec 27, 2022
Identifying legitimate websites to remove false positives from domain discovery analysis
PROOFPOINT INC3 citations72
US11973799B2Apr 30, 2024
Domain name processing systems and methods
PROOFPOINT INC2 citations71
US12323462B2Jun 3, 2025
Identifying legitimate websites to remove false positives from domain discovery analysis
PROOFPOINT INC0 citations62
US12242548B2Mar 4, 2025
Data enrichment systems and methods for abbreviated domain name classification
PROOFPOINT INC0 citations62
US12113820B2Oct 8, 2024
Threat actor identification systems and methods
PROOFPOINT INC0 citations62
US12038983B2Jul 16, 2024
Intelligent clustering systems and methods useful for domain protection
PROOFPOINT INC0 citations62
US11868412B1Jan 9, 2024
Data enrichment systems and methods for abbreviated domain name classification
PROOFPOINT INC0 citations62
US11700272B2Jul 11, 2023
Threat actor identification systems and methods
PROOFPOINT INC0 citations62
US11194871B2Dec 7, 2021
Data enrichment systems and methods for abbreviated domain name classification
PROOFPOINT INC0 citations62
US10965701B2Mar 30, 2021
Threat actor identification systems and methods
PROOFPOINT INC1 citations62
US12438911B2Oct 7, 2025
Domain name processing systems and methods
PROOFPOINT INC0 citations61
US12271811B2Apr 8, 2025
Systems and methods for email campaign domain classification
PROOFPOINT INC0 citations51
US12026469B2Jul 2, 2024
Detecting random and/or algorithmically-generated character sequences in domain names
PROOFPOINT INC0 citations51
US11671456B2Jun 6, 2023
Natural language processing systems and methods for automatic reduction of false positives in domain discovery
PROOFPOINT INC0 citations51