Inventor · disambiguated record
Axel Schroepfer
Also filed as: SCHROEPFER AXEL
23 granted patents·2 pending applications·128 citations·filing 2013–2025
94Inventor score
Top patents by PatentIndex Score
25 records- 0194US11133922B1Computation-efficient secret shuffle protocol for encrypted data based on homomorphic encryptionSAP SE·Filed 2020·Granted Sep 28, 2021·7 cites·20 claims
- 0293US9037860B1Average-complexity ideal-security order-preserving encryptionKERSCHBAUM FLORIAN·Filed 2013·Granted May 19, 2015·28 cites·20 claims
- 0392US9213764B2Encrypted in-memory column-storeKERSCHBAUM FLORIAN·Filed 2013·Granted Dec 15, 2015·20 cites·20 claims
- 0488US11687878B2Privacy-preserving supply chain verification for multiple asset types in shared data storage scenariosSAP SE·Filed 2020·Granted Jun 27, 2023·4 cites·20 claims
- 0587US9607161B2Optimal re-encryption strategy for joins in encrypted databasesHAERTERICH MARTIN·Filed 2015·Granted Mar 28, 2017·7 cites·18 claims
- 0687US9342707B1Searchable encryption for infrequent queries in adjustable encrypted databasesKERSCHBAUM FLORIAN·Filed 2014·Granted May 17, 2016·10 cites·20 claims
- 0786US11050725B2Private benchmarking cloud service with enhanced statisticsSAP SE·Filed 2018·Granted Jun 29, 2021·8 cites·20 claims
- 0886US9003204B2Optimal re-encryption strategy for joins in encrypted databasesHAERTERICH MARTIN·Filed 2013·Granted Apr 7, 2015·10 cites·12 claims
- 0984US9547720B2Access control for encrypted query processingHANG ISABELLE·Filed 2014·Granted Jan 17, 2017·9 cites·20 claims
- 1083US11552794B2Deterministic random blindingSAP SE·Filed 2020·Granted Jan 10, 2023·2 cites·20 claims
- 1182US10162858B2Local versus remote optimization in encrypted query processingKERSCHBAUM FLORIAN·Filed 2013·Granted Dec 25, 2018·7 cites·14 claims
- 1281US9537838B2Adjustable proxy re-encryptionHANG ISABELLE·Filed 2014·Granted Jan 3, 2017·7 cites·17 claims
- 1374US11631117B2Method, system, and non-transitory computer readable storage device for a pooling requirement while preserving privacySAP SE·Filed 2019·Granted Apr 18, 2023·3 cites·18 claims
- 1473US11411725B2Efficient distributed secret shuffle protocol for encrypted database entries using independent shufflersSAP SE·Filed 2020·Granted Aug 9, 2022·1 cites·20 claims
- 1573US11368296B2Communication-efficient secret shuffle protocol for encrypted data based on homomorphic encryption and oblivious transferSAP SE·Filed 2020·Granted Jun 21, 2022·1 cites·20 claims
- 1673US11368281B2Efficient distributed secret shuffle protocol for encrypted database entries using dependent shufflersSAP SE·Filed 2020·Granted Jun 21, 2022·1 cites·20 claims
- 1773US11356241B2Verifiable secret shuffle protocol for encrypted data based on homomorphic encryption and secret sharingSAP SE·Filed 2020·Granted Jun 7, 2022·1 cites·20 claims
- 1873US11265153B2Verifying a result using encrypted data provider data on a public storage mediumSAP SE·Filed 2020·Granted Mar 1, 2022·1 cites·20 claims
- 1971US2025358097A1Secure aggregation with cascaded decryptionSAP SE·Filed 2025·Application pending·0 cites
- 2068US11190336B2Privacy-preserving benchmarking with interval statistics reducing leakageSAP SE·Filed 2019·Granted Nov 30, 2021·1 cites·20 claims
- 2160US12401493B2Performance benchmarking with cascaded decryptionSAP SE·Filed 2022·Granted Aug 26, 2025·0 cites·20 claims
- 2250US11367148B2Distributed ledger based mass balancing via secret sharingSAP SE·Filed 2020·Granted Jun 21, 2022·0 cites·21 claims
- 2350US9355377B2Carbon dioxide emissions optimized secure cloud computingSCHROEPFER AXEL·Filed 2013·Granted May 31, 2016·0 cites·13 claims
- 2446US11036872B2Privacy-preserving sum-based consistency checks for blockchainsSAP SE·Filed 2019·Granted Jun 15, 2021·0 cites·20 claims
- 2545US2014372769A1Automatic Protocol Selection in Mixed-Protocol Secure ComputationKERSCHBAUM FLORIAN·Filed 2013·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →