ROGER DAVID BUTLER

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Abbotsford, AU

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Patents Grantslast 30 patents

Information Patent Grant
Dynamic thresholds for document tamper detection
- Patent number 8,848,984
- Issue date Sep 30, 2014
- Canon Kabushiki Kaisha
- Neil Yager
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Anti-tamper using barcode degradation
- Patent number 8,181,850
- Issue date May 22, 2012
- Canon Kabushiki Kaisha
- Roger David Butler
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
CALIBRATION MARKER FOR 3D PRINTER CALIBRATION
- Publication number 20170090461
- Publication date Mar 30, 2017
- Canon Kabushiki Kaisha
- ERIC WAI-SHING CHONG
- B33 - ADDITIVE MANUFACTURING TECHNOLOGY
Information Patent Application
Dynamic thresholds for document tamper detection
- Publication number 20120218284
- Publication date Aug 30, 2012
- Canon Kabushiki Kaisha
- Neil YAGER
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
ANTI-TAMPER USING BARCODE DEGRADATION
- Publication number 20110127321
- Publication date Jun 2, 2011
- Canon Kabushiki Kaisha
- ROGER DAVID BUTLER
- G06 - COMPUTING CALCULATING COUNTING