Ahto BULDAS

Person

Tallinn, EE

People

Patents Grantslast 30 patents

Information Patent Grant
Verifiable transfer of data using sharded blockchain
- Patent number 12,093,952
- Issue date Sep 17, 2024
- Guardtime SA
- Ahto Buldas
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Composite digital signatures
- Patent number 11,251,970
- Issue date Feb 15, 2022
- CYBERNETICA AS
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Blockchain-assisted hash-based data signature system and method
- Patent number 11,057,187
- Issue date Jul 6, 2021
- Guardtime SA
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Blockchain-supported, fail-safe synchronization in a data authentic...
- Patent number 10,103,893
- Issue date Oct 16, 2018
- Guardtime IP Holdings, Ltd
- Andres Kroonmaa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Redundant fail-safe synchronization in a data authentication infras...
- Patent number 9,911,007
- Issue date Mar 6, 2018
- Guardtime IP Holdings, Ltd
- Andres Kroonmaa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Document verification with distributed calendar infrastructure
- Patent number 9,876,779
- Issue date Jan 23, 2018
- Guardtime IP Holdings, Ltd
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for sequential data signatures
- Patent number 9,614,682
- Issue date Apr 4, 2017
- Guardtime IP Holdings, Ltd
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Document verification with ID augmentation
- Patent number 9,473,306
- Issue date Oct 18, 2016
- Guardtime IP Holdings, Ltd
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for field-verifiable record authentication
- Patent number 9,268,969
- Issue date Feb 23, 2016
- GUARDTIME IP HOLDINGS LIMITED
- Michael Gault
- G11 - INFORMATION STORAGE
Information Patent Grant
Non-deterministic time systems and methods
- Patent number 9,178,708
- Issue date Nov 3, 2015
- GUARDTIME IP HOLDINGS LIMITED
- Michael Gault
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Document verification with distributed calendar infrastructure
- Patent number 9,122,846
- Issue date Sep 1, 2015
- GUARDTIME IP HOLDINGS LIMITED
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for generating keyless digital multi-signatures
- Patent number 8,874,921
- Issue date Oct 28, 2014
- Guardtime IP Holdings, Ltd
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Document verification with distributed calendar infrastructure
- Patent number 8,719,576
- Issue date May 6, 2014
- Guardtime IP Holdings, Ltd
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for generating a digital certificate
- Patent number 8,347,372
- Issue date Jan 1, 2013
- Guardtime IP Holdings Limited
- Mart Saarepera
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for generating a digital certificate
- Patent number 8,312,528
- Issue date Nov 13, 2012
- Guardtime IP Holdings Limited
- Mart Saarepera
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for generating a digital certificate
- Patent number 7,698,557
- Issue date Apr 13, 2010
- Guardtime AS
- Mart Saarepera
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
DIGITAL SIGNATURE SYSTEM USING SCALABLE SERVERS
- Publication number 20230344643
- Publication date Oct 26, 2023
- Planetway Corporation
- Jaan PRIISALU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Atomic Multi-Unit Transfer of Single-Instance Data Units in Sharded...
- Publication number 20230342774
- Publication date Oct 26, 2023
- Guardtime SA
- Ahto BULDAS
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DIGITAL SIGNATURE SYSTEM USING RELIABLE SERVERS
- Publication number 20230048174
- Publication date Feb 16, 2023
- Planetway Corporation
- Jaan PRIISALU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Verifiable Splitting of Single-Instance Data Using Sharded Blockchain
- Publication number 20220284129
- Publication date Sep 8, 2022
- Guardtime SA
- Ahto BULDAS
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Verifiable Transfer of Data Using Sharded Blockchain
- Publication number 20210365943
- Publication date Nov 25, 2021
- Guardtime SA
- Ahto BULDAS
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Verifiably Unique Transfer of Exclusive Control of Data Units
- Publication number 20210279727
- Publication date Sep 9, 2021
- Guardtime SA
- Ahto BULDAS
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Blockchain-Assisted Hash-Based Data Signature System and Method
- Publication number 20200052886
- Publication date Feb 13, 2020
- Guardtime SA
- Ahto BULDAS
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMPOSITE DIGITAL SIGNATURES
- Publication number 20200044861
- Publication date Feb 6, 2020
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
BLOCKCHAIN-SUPPORTED, FAIL-SAFE SYNCHRONIZATION IN A DATA AUTHENTIC...
- Publication number 20180198626
- Publication date Jul 12, 2018
- GUARDTIME IP HOLDINGS LIMITED
- ANDRES KROONMAA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
BLOCKCHAIN-SUPPORTED, HASH TREE-BASED DIGITAL SIGNATURE INFRASTRUCTURE
- Publication number 20180152442
- Publication date May 31, 2018
- GUARDTIME IP HOLDINGS LIMITED
- Ahto BULDAS
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Redundant Fail-Safe Synchronization in a Data Authentication Infras...
- Publication number 20160253523
- Publication date Sep 1, 2016
- GUARDTIME IP HOLDINGS LIMITED
- ANDRES KROONMAA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Document Verification With Distributed Calendar Infrastructure
- Publication number 20160028721
- Publication date Jan 28, 2016
- GUARDTIME IP HOLDINGS LIMITED
- Ahto BULDAS
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and Method for Sequential Data Signatures
- Publication number 20150295720
- Publication date Oct 15, 2015
- GUARDTIME IP HOLDINGS, LTD.
- Ahto BULDAS
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
NON-DETERMINISTIC TIME SYSTEMS AND METHODS
- Publication number 20150156026
- Publication date Jun 4, 2015
- GUARDTIME IP HOLDINGS LIMITED
- Michael GAULT
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD FOR FIELD-VERIFIABLE RECORD AUTHENTICATION
- Publication number 20150052615
- Publication date Feb 19, 2015
- GUARDTIME IP HOLDINGS LIMITED
- Michael GAULT
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DOCUMENT VERIFICATION WITH ID AUGMENTATION
- Publication number 20150039893
- Publication date Feb 5, 2015
- GUARDTIME IP HOLDINGS LIMITED
- AHTO BULDAS
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Document Verification With Distributed Calendar Infrastructure
- Publication number 20140282863
- Publication date Sep 18, 2014
- GUARDTIME IP HOLDINGS LIMITED
- Ahto BULDAS
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Verification System and Method with Extra Security for Lower-Entrop...
- Publication number 20140245020
- Publication date Aug 28, 2014
- GUARDTIME IP HOLDINGS LIMITED
- AHTO BULDAS
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DOCUMENT VERIFICATION WITH DISTRIBUTED CALENDAR INFRASTRUCTURE
- Publication number 20130276058
- Publication date Oct 17, 2013
- Ahto Buldas
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
SYSTEM AND METHOD FOR GENERATING KEYLESS DIGITAL MULTI-SIGNATURES
- Publication number 20120324229
- Publication date Dec 20, 2012
- GUARDTIME IP HOLDINGS LIMITED
- Ahto Buldas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD FOR GENERATING A DIGITAL CERTIFICATE
- Publication number 20100199087
- Publication date Aug 5, 2010
- GUARDTIME AS
- Mart Saarepera
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD FOR GENERATING A DIGITAL CERTIFICATE
- Publication number 20100199342
- Publication date Aug 5, 2010
- GUARDTIME AS
- Mart Saarepera
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method for generating a digital certificate
- Publication number 20050138361
- Publication date Jun 23, 2005
- Mart Saarepera
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method for renewing and extending digitally signed certi...
- Publication number 20040193872
- Publication date Sep 30, 2004
- Mart Saarepera
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method and apparatus for validating a digital signature
- Publication number 20010032314
- Publication date Oct 18, 2001
- Arne Ansper
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Ahto BULDAS

Person

Patents Grantslast 30 patents

Verifiable transfer of data using sharded blockchain

Composite digital signatures

Blockchain-assisted hash-based data signature system and method

Blockchain-supported, fail-safe synchronization in a data authentic...

Redundant fail-safe synchronization in a data authentication infras...

Document verification with distributed calendar infrastructure

System and method for sequential data signatures

Document verification with ID augmentation

System and method for field-verifiable record authentication

Non-deterministic time systems and methods

Document verification with distributed calendar infrastructure

System and method for generating keyless digital multi-signatures

Document verification with distributed calendar infrastructure

System and method for generating a digital certificate

System and method for generating a digital certificate

System and method for generating a digital certificate

Patents Applicationslast 30 patents

DIGITAL SIGNATURE SYSTEM USING SCALABLE SERVERS

Atomic Multi-Unit Transfer of Single-Instance Data Units in Sharded...

DIGITAL SIGNATURE SYSTEM USING RELIABLE SERVERS

Verifiable Splitting of Single-Instance Data Using Sharded Blockchain

Verifiable Transfer of Data Using Sharded Blockchain

Verifiably Unique Transfer of Exclusive Control of Data Units

Blockchain-Assisted Hash-Based Data Signature System and Method

COMPOSITE DIGITAL SIGNATURES

BLOCKCHAIN-SUPPORTED, FAIL-SAFE SYNCHRONIZATION IN A DATA AUTHENTIC...

BLOCKCHAIN-SUPPORTED, HASH TREE-BASED DIGITAL SIGNATURE INFRASTRUCTURE

Redundant Fail-Safe Synchronization in a Data Authentication Infras...

Document Verification With Distributed Calendar Infrastructure

System and Method for Sequential Data Signatures

NON-DETERMINISTIC TIME SYSTEMS AND METHODS

SYSTEM AND METHOD FOR FIELD-VERIFIABLE RECORD AUTHENTICATION

DOCUMENT VERIFICATION WITH ID AUGMENTATION

Document Verification With Distributed Calendar Infrastructure

Verification System and Method with Extra Security for Lower-Entrop...

DOCUMENT VERIFICATION WITH DISTRIBUTED CALENDAR INFRASTRUCTURE

SYSTEM AND METHOD FOR GENERATING KEYLESS DIGITAL MULTI-SIGNATURES

SYSTEM AND METHOD FOR GENERATING A DIGITAL CERTIFICATE

SYSTEM AND METHOD FOR GENERATING A DIGITAL CERTIFICATE

System and method for generating a digital certificate

System and method for renewing and extending digitally signed certi...

Method and apparatus for validating a digital signature