Charles T. Markantes
58Patents
23h-index
33Co-inventors
88Inventor score
Filing activity: May 14, 1993 → Oct 24, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5424119A | Polymeric sheet having oriented multilayer interference thin film flakes therein, product using the same and method | Emerging Cross-Sectional Technologies | 147 | Expired |
| US6838166B2 | Multi-layered magnetic pigments and foils | Emerging Cross-Sectional Technologies | 145 | Expired |
| US6761959B1 | Diffractive surfaces with color shifting backgrounds | Emerging Cross-Sectional Technologies | 114 | Expired |
| US7047883B2 | Method and apparatus for orienting magnetic flakes | Performing Operations; Transporting | 110 | Expired |
| US6114018A | Paired optically variable article with paired optical structures and ink, paint and foil incorporating the same and method | Emerging Cross-Sectional Technologies | 85 | Expired |
| US6473165B1 | Automated verification systems and methods for use with optical interference devices | Physics | 82 | Expired |
| US6841238B2 | Chromatic diffractive pigments and foils | Emerging Cross-Sectional Technologies | 78 | Expired |
| US6759097B2 | Methods for producing imaged coated articles by using magnetic pigments | Emerging Cross-Sectional Technologies | 75 | Expired |
| US6808806B2 | Methods for producing imaged coated articles by using magnetic pigments | Emerging Cross-Sectional Technologies | 70 | Expired |
| US6749936B2 | Achromatic multilayer diffractive pigments and foils | Emerging Cross-Sectional Technologies | 68 | Expired |
| US6818299B2 | Multi-layered magnetic pigments and foils | Emerging Cross-Sectional Technologies | 63 | Expired |
| US7184133B2 | Automated verification systems and method for use with optical interference devices | Physics | 53 | Expired |
| US8343615B2 | Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures | Emerging Cross-Sectional Technologies | 48 | Active |
| US6997981B1 | Thermal control interface coatings and pigments | Emerging Cross-Sectional Technologies | 48 | Expired |
| US5766738A | Paired optically variable article with paired optically variable structures and ink, paint and foil incorporating the same and method | Emerging Cross-Sectional Technologies | 48 | Expired |
| US7258900B2 | Magnetic planarization of pigment flakes | Performing Operations; Transporting | 39 | Expired |
| US9662925B2 | Anisotropic magnetic flakes | Emerging Cross-Sectional Technologies | 35 | Active |
| US7224528B2 | Optically variable security devices | Emerging Cross-Sectional Technologies | 33 | Expired |
| US7006204B2 | Automated verification systems and methods for use with optical interference devices | Physics | 33 | Expired |
| US7517578B2 | Method and apparatus for orienting magnetic flakes | Emerging Cross-Sectional Technologies | 30 | Active |
| US6970236B1 | Methods and systems for verification of interference devices | Physics | 30 | Expired |
| US7604855B2 | Kinematic images formed by orienting alignable flakes | Emerging Cross-Sectional Technologies | 29 | Active |
| US7169472B2 | Robust multilayer magnetic pigments and foils | Emerging Cross-Sectional Technologies | 29 | Expired |
| US7029745B2 | Security articles having diffractive surfaces and color shifting backgrounds | Emerging Cross-Sectional Technologies | 23 | Expired |
| US9027479B2 | Method and apparatus for orienting magnetic flakes | Performing Operations; Transporting | 23 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.