Inventor

BUTLER ROGER DAVID

AU3 patents

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

LAKE TECHNOLOGY LTD

1 patent

US7068290B2Jun 27, 2006

Authoring system

LAKE TECHNOLOGY LTD15 citations77

YAGER NEIL

1 patent

US8848984B2Sep 30, 2014

Dynamic thresholds for document tamper detection

YAGER NEIL3 citations48

BUTLER ROGER DAVID

1 patent

US8181850B2May 22, 2012

Anti-tamper using barcode degradation

BUTLER ROGER DAVID1 citations36