Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Digitally watermarking holograms for identity documents

Digitally watermarking holograms for identity documents

US Patent 6882737 · Granted Apr 19, 2005

Estimated economic value: $646,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Methods and arrangements to aid recycling2025
Learning systems and methods2025
Lighting arrangements for material sorting2025
Recycling methods and systems, and related plastic containers2025
Signaling arrangements employing molded thermoplastics2025
Pre-press warping arrangements for watermarks and associated graphic artworks, w2025
Laser marking of machine-readable codes2025
Generating reading optical codes with variable density to adapt for visual quali2024
Recycling methods and systems, and related plastic containers2024
Recycling methods and systems, and related plastic containers2024
Methods and arrangements for sorting items, useful in recycling2024
Laser marking of machine-readable codes2023