Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Method and system for watermark detection Image Number 4 for United States Patent #7133536. A system and method of detecting and authenticating a watermark on a document such as a check which is supposed to include a watermark having known characteristics to verify the authenticity of the document. A digitized image of the document is stored and processed through transformation which generates a frequency distribution. That frequency distribution is processed to determine one or more harmonic compared to a stored value associated with the document to determine that a watermark exists and it is the correct watermark.       Recently Added Patents Image forming system, image forming apparatus, and job issuing method Managing object model communications Method of performing refractive laser eye surgery centered along the visual axis of a human eye Method of manufacturing a wiper arm assembly having a locking member Method and apparatus for manufacturing a multi layer chip capacitor Printed circuit board test assisting apparatus, printed circuit board test assisting method, and computer-readable information recording medium Oral pharmaceutical solutions containing telbivudine   Randomly Featured Patents Package structure for connection with output/input module Method of fabricating semiconductor laser device using the light generated by the laser to disorder its active layer at the end surfaces thereby forming window regions Trans-beta-isocyanatoacrylate esters, their preparation, and polymers made therefrom Guard for radial arm saw Event-driven flow control for a very high-speed switching node Merged cascode transistor Toothbrush and brace cleaning kit Presenting an alternative product package offer from a web vendor Production of thermoplastic billets and preforms Lower part of fastener device © 2006-2008 PatentGenius. All Rights Reserved.