| 6770225 |
Textured retroreflective prism structures and molds for forming same |
Robert B. Nilsen, Christopher Alan Barnett |
2004-08-03 |
| 6674875 |
Anti-counterfeiting and diffusive screens |
Jonathan Michael Blackledge, William Nevil Heaton Johnson |
2004-01-06 |
| 6525877 |
Projection screens and the like |
Robin J. T. Clabburn, Terence Yeo, Lee Batchelder |
2003-02-25 |
| 6258443 |
Textured retroreflective prism structures and molds for forming same |
Robert B. Nilsen, Christopher Alan Barnett |
2001-07-10 |
| 6151142 |
Grazing incidence holograms and system and method for producing the same |
Zane Coleman, Michael Metz |
2000-11-21 |
| 6061463 |
Holographic fingerprint device |
Michael Metz, Zane Coleman, Carl Flatow |
2000-05-09 |
| 5986746 |
Topographical object detection system |
Michael Metz, Zane Coleman, Carl Flatow |
1999-11-16 |
| 5974162 |
Device for forming and detecting fingerprint images with valley and ridge structure |
Michael Metz, Carl Flatow, Zane Coleman |
1999-10-26 |
| 5926319 |
Screens having graded refractive index lenses |
William Nevil Heaton Johnson |
1999-07-20 |
| 5897980 |
Method of imparting contrast enhancement properties to diffusing, depixelating or projection screens |
Christopher Alan Barnett, Robin J. T. Clabburn |
1999-04-27 |
| 5822479 |
Writing diffraction gratings with interference fringe patterns |
Bruce R Napier |
1998-10-13 |
| 5822089 |
Grazing incidence holograms and system and method for producing the same |
Zane Coleman |
1998-10-13 |
| 5710645 |
Grazing incidence holograms and system and method for producing the same |
Zane Coleman |
1998-01-20 |
| 5695895 |
Randomised mask for a diffusing screen |
William Nevil Heaton Johnson |
1997-12-09 |
| 5642449 |
Fibre optic plate display |
— |
1997-06-24 |
| 5442482 |
Microlens screens, photopolymerisable materials and artifacts utilising the same |
William Nevil Heaton Johnson |
1995-08-15 |
| 4966428 |
Manufacture of integrated circuits using holographic techniques |
— |
1990-10-30 |
| 4857425 |
Manufacture of integrated circuits using holographic techniques |
— |
1989-08-15 |
