NuCypher Patents

Patent portfolio assigned to NuCypher (verified via public assignee records). Estimated patent count: 1. US decentralized threshold-cryptography / proxy-re-encryption network (now part of Threshold Network; product TACo). Patent confirmed: US10581603B2 'Method and system for secure delegated access to encrypted data in big data computing clusters', inventors Mikhail Egorov & MacLane Scott Wilkison (NuCypher founders); count >=1 (assignee verification limited by Google Patents 503). YC page lists infrastructure integrations/adopters (Ceramic, Irys, Textile, Unlock) as 'partners' but as protocol integrators rather than clearly named paying customers, so notable_customers left empty. Direct competitors not named in a sourced page.