Inventor

DUFFELL JOHN

GB4 patents

⚠️ This page may combine multiple inventors who share the name “DUFFELL JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

IBM

3 patents

US9871804B2Jan 16, 2018

ABATHORN LTD

1 patent

US7757091B2Jul 13, 2010

Method and apparatus for the creation of a self-authenticating document

ABATHORN LTD10 citations72

DUFFELL JOHN

IBM

User authentication

User authentication

User authentication

ABATHORN LTD

Method and apparatus for the creation of a self-authenticating document