Inventor
STAMMERJOHANN KAI
DE15 patents
⚠️ This page may combine multiple inventors who share the name “STAMMERJOHANN KAI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SAP SE
12 patentsUS9177025B2Nov 3, 2015
Hash-join in parallel computation environments
SAP SE14 citations91
US12511275B2Dec 30, 2025
Disk-based merge for hash maps
SAP SE0 citations62
US12481656B2Nov 25, 2025
Bloom filter for avoiding partition loading
SAP SE0 citations62
US12461918B2Nov 4, 2025
Data compression, store, and search system
SAP SE0 citations62
US12216634B1Feb 4, 2025
Disk-based merge for hash maps
SAP SE0 citations62
US12032578B1Jul 9, 2024
Data compression, store, and search system
SAP SE0 citations62
US12579122B2Mar 17, 2026
Used identifier cache
SAP SE0 citations51
US12399882B1Aug 26, 2025
Data aggregation based on hash map data structures
SAP SE0 citations51
US12216582B1Feb 4, 2025
Disk-based merge for combining merged hash maps
SAP SE0 citations51
US12007986B2Jun 11, 2024
Aggregation over high-cardinality dimensions using uniqueness indices
SAP SE0 citations50
US11106673B2Aug 31, 2021
Query plan sharing
SAP SE0 citations50
US10621153B2Apr 14, 2020
Preview data aggregation
SAP SE0 citations39