AB

Ahto Buldas

GL Guardtime Ip Holdings Limited: 12 patents #1 of 17Top 6%
GS Guardtime Sa: 2 patents #4 of 16Top 25%
📍 Tallinn, EE: #9 of 466 inventorsTop 2%
Overall (All Time): #243,794 of 4,157,543Top 6%
18
Patents All Time

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #TitleCo-InventorsDate
12206792 Digital signature system using scalable servers Jaan Priisalu, Mart Saarepera 2025-01-21
12112324 Verifiably unique transfer of exclusive control of data units Mart Saarepera, Michael Gault 2024-10-08
12093952 Verifiable transfer of data using sharded blockchain Mart Saarepera, Michael Gault, Risto Laanoja 2024-09-17
11251970 Composite digital signatures Peeter Laud, Mart Oruaas, Aivo Kalu 2022-02-15
11057187 Blockchain-assisted hash-based data signature system and method Risto Laanoja, Ahto Truu 2021-07-06
10103893 Blockchain-supported, fail-safe synchronization in a data authentication infrastructure Andres Kroonmaa, Jeffrey Pearce 2018-10-16
9911007 Redundant fail-safe synchronization in a data authentication infrastructure Andres Kroonmaa, Jeffrey Pearce 2018-03-06
9876779 Document verification with distributed calendar infrastructure Mart Saarepera 2018-01-23
9614682 System and method for sequential data signatures Risto Laanoja, Ahto Truu 2017-04-04
9473306 Document verification with ID augmentation Ahto Truu, Andres Kroonmaa 2016-10-18
9268969 System and method for field-verifiable record authentication Michael Gault, Risto Laanoja, Martin Ruubel, Peter Rajnak, David F. A. Piesse +2 more 2016-02-23
9178708 Non-deterministic time systems and methods Michael Gault, Ahto Truu, Martin Ruubel, Jeffrey Pearce 2015-11-03
9122846 Document verification with distributed calendar infrastructure Mart Saarepera 2015-09-01
8874921 System and method for generating keyless digital multi-signatures Andres Kroonmaa, Mart Saarepera 2014-10-28
8719576 Document verification with distributed calendar infrastructure Mart Saarepera 2014-05-06
8347372 System and method for generating a digital certificate Mart Saarepera 2013-01-01
8312528 System and method for generating a digital certificate Mart Saarepera 2012-11-13
7698557 System and method for generating a digital certificate Mart Saarepera 2010-04-13