Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and apparatus for inspection of security articles incorporating a diffractive optical projection element

Method and apparatus for inspection of security articles incorporating a diffractive optical projection element

US Patent 7652757 · Granted Jan 26, 2010

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Manufacturing a two-sided product with an integrated device including microscale2025
Manufacturing a two-sided product with an integrated device including microscale2025
Banknote and a method of producing a plurality of banknotes and a print press fo2025
Banknote2024
Hinged kiln brick protective collar2022
Security document including an optical security feature2022
Optical security device and method of manufacture2022
Micro-imagery design integration2022
Hinged kiln brick protective collar2022
Method of producing micro-image elements on a substrate2021
Hinged kiln brick protective collar2021
Combination microlens optical device2021