Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method of rendering documents resistant to photocopying and anti-copying paper therefor

Method of rendering documents resistant to photocopying and anti-copying paper therefor

US Patent 4632429 · Granted Dec 30, 1986

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Characteristic verification system2015
System and method for providing tangible medium with electromagnetic security ma2015
Illumination sources and subjects having distinctly matched and mismatched narro2014
Illumination sources and subjects having distinctly matched and mismatched narro2013
System and method for prioritizing communications messages2011
Illumination sources and subjects having distinctly matched and mismatched narro2011
Prioritizing electronic messages based on the sender's address2005
Latent inkjet formulation and method2005
Process for blending of ink used in counterfeit detection systems2004
Makeover system2004
Counterfeit detection system2002
System and method for prioritizing communications messages2002