Patents
CoreStreet's patent portfolio not only covers our core validation technology, but also other certificate validation technologies and processes. The portfolio includes crucial patents in the complementary area of efficient certificate issuance.
The first patent was issued May 30, 1995; and the most recent on April 1, 2008. CoreStreet owns the full rights to these patents.
- U.S. Patent No. 5,420,927: Method for Certifying Public Keys in a Digital Signature Scheme
- U.S. Patent No. 5,604,804: Improved Method for Certifying Public Keys in a Digital Signature Scheme
- U.S. Patent No. 5,717,759: Improved Method for Certifying Public Keys in a Digital Signature Scheme
- U.S. Patent No. 5,610,982: Compact Certificate with Threshold Signatures
- U.S. Patent No. 5,666,416: Certificate Revocation System
- U.S. Patent No. 5,793,868: Certificate Revocation System
- U.S. Patent No. 5,717,758: Witness-Based Certificate Revocation System
- U.S. Patent No. 5,960,083: Certificate Revocation System
- U.S. Patent No. 5,717,757: Certificate Issue Lists
- U.S. Patent No. 6,097,811: Tree-Based Certificate Revocation System
- U.S. Patent No. 6,292,893 B1: Certificate Revocation System
- U.S. Patent No. 6,301,659 B1: Tree-Based Certificate Revocation
- European Patent No. EP 0 858 702 B1: Tree-Based Certificate Revocation System
- U.S. Patent No. 6,487,658 B1: Efficient Certificate Revocation
- U.S. Patent No. 6,766,450 B2: Certificate Revocation System
- U.S. Patent No. 7,337,315 B2: Efficient Certificate Revocation
- U.S. Patent No. 7,353,396 B2: Physical Access Control
