Issued Patents All Time
Showing 101–125 of 130 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5570847 | Methods of heat-treating miltilayer inteference platelets | Shari Powell Fisher, Paul G. Coombs | 1996-11-05 |
| 5571624 | High chroma multilayer interference platelets | Shari Powell Fisher, Paul G. Coombs | 1996-11-05 |
| 5569535 | High chroma multilayer interference platelets | Shari Powell Fisher, Paul G. Coombs | 1996-10-29 |
| 5500302 | Barrier film and method | Paul G. Coombs, Lauren R. Wendt | 1996-03-19 |
| 5424119 | Polymeric sheet having oriented multilayer interference thin film flakes therein, product using the same and method | Paul G. Coombs, Patrick K. Higgins, Charles T. Markantes | 1995-06-13 |
| 5383995 | Method of making optical thin flakes and inks incorporating the same | Thomas Mayer, Gary S. Ash | 1995-01-24 |
| 5368902 | Method for making patterned thin film | David W. Todd, Lindsey Brown, Elliot E. Overshiner | 1994-11-29 |
| 5281480 | Optically variable multilayer structure on flexible web | Thomas Mayer, Gary S. Ash | 1994-01-25 |
| 5279657 | Optically variable printing ink | Thomas Mayer, Gary S. Ash | 1994-01-18 |
| 5278590 | Transparent optically variable device | Paul G. Coombs | 1994-01-11 |
| 5214530 | Optically variable interference device with peak suppression and method | Paul G. Coombs | 1993-05-25 |
| 5186787 | Pre-imaged high resolution hot stamp transfer foil, article and method | Kraig R. Willison | 1993-02-16 |
| 5171363 | Optically variable printing ink | Thomas Mayer, Gary S. Ash | 1992-12-15 |
| 5135812 | Optically variable thin film flake and collection of the same | Thomas Mayer, Gary S. Ash | 1992-08-04 |
| 5077258 | Vapor deposited metal catalytic film, process for making the same and liquid container with the film | Lauren R. Wendt | 1991-12-31 |
| 5059454 | Method for making patterned thin film | David W. Todd, Lindsey Brown, Elliot E. Overshiner | 1991-10-22 |
| 5059245 | Ink incorporating optically variable thin film flakes | Thomas Mayer, Gary S. Ash | 1991-10-22 |
| 5005719 | Tamper evident optical device and article utilizing the same | Vernon C. Spellman, Wayne L. Gossett, Marc A. Kamerling, Paul G. Coombs, David W. Todd +1 more | 1991-04-09 |
| 5002312 | Pre-imaged high resolution hot stamp transfer foil, article and method | Kraig R. Willison | 1991-03-26 |
| 4930866 | Thin film optical variable article and method having gold to green color shift for currency authentication | Peter H. Berning | 1990-06-05 |
| 4840281 | Tamper evident optical device and article utilizing the same | Vernon C. Spellman, Wayne L. Gossett, Marc A. Kamerling, Paul G. Coombs | 1989-06-20 |
| 4838648 | Thin film structure having magnetic and color shifting properties | Paul G. Coombs | 1989-06-13 |
| 4779898 | Thin film optically variable article and method having gold to green color shift for currency authentication | Peter H. Berning | 1988-10-25 |
| 4721217 | Tamper evident optically variable device and article utilizing the same | Vernon C. Spellman, Wayne L. Gossett, Marc A. Kamerling | 1988-01-26 |
| 4705356 | Thin film optical variable article having substantial color shift with angle and method | Peter H. Berning | 1987-11-10 |