Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6905538 | Invisible ink jet inks | — | 2005-06-14 |
| 6902265 | Method for printing high information density machine-readable composite images | Michael J. Critelli, Perry A. Pierce | 2005-06-07 |
| 6827769 | Photosensitive optically variable ink heterogeneous compositions for ink jet printing | Richard A. Bernard | 2004-12-07 |
| 6793723 | Homogeneous photosensitive optically variable ink compositions for ink jet printing | John Griffiths, John Mama | 2004-09-21 |
| 6270213 | Fluorescent and phosphorescent ink for use with an information based indicia | Ronald P. Sansone, Richard A. Bernard | 2001-08-07 |
| 6142380 | Usage of dual luminescent inks to produce a postal orienting and sorting identification mark for an information-based indicia | Ronald P. Sansone, Richard A. Bernard | 2000-11-07 |
| 6039257 | Postage metering system that utilizes secure invisible bar codes for postal verification | William Berson | 2000-03-21 |
| 5693693 | Bar code printing and scanning using wax based invisible fluorescent inks | William Berson | 1997-12-02 |
| 5684069 | Composition for invisible ink responsive to infrared light | — | 1997-11-04 |
| 5681381 | Fluorescent red and magenta waterfast ink jet inks | Shunichi Higashiyama | 1997-10-28 |
| 5674314 | Waterfast ink composition for printers | Shunichi Higashiyama | 1997-10-07 |
| 5542971 | Bar codes using luminescent invisible inks | William Berson | 1996-08-06 |
| 5525798 | Bar code scanner for reading a lower layer luminescent invisible ink that is printed below a upper layer luminescent invisible ink | William Berson | 1996-06-11 |
| 5502304 | Bar code scanner for reading a visible ink and a luminescent invisible ink | William Berson | 1996-03-26 |
| 5413037 | Use of encapsulated ink for enhancing postage meter security | William Berson | 1995-05-09 |
| 5290348 | Non aqueous fluorescent dispersion ink with improved shelf life, tack and flow | — | 1994-03-01 |
| 5288316 | Non aqueous dispersion ink with improved shelf life, tack and flow | Norman C. Hochwalt | 1994-02-22 |
| 5136968 | Sustained release ink dispenser | Thyagaraj Sarada, Richard A. Bernard | 1992-08-11 |
| 5114478 | Homogenous ink composition | Norman C. Hochwalt, Thjagaraj Sarada | 1992-05-19 |
| 5084205 | Ink solution comprising red flourescent materials with a non red visual color | — | 1992-01-28 |