Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12338352 | Dry erase inks, and associated methods and writing instruments | Russell A. Vanderhoof | 2025-06-24 |
| 12209192 | Opaque ink formulations and associated writing instruments | Marty Sexton | 2025-01-28 |
| 12064989 | Writing instruments and associated methods | Bret R. Marschand | 2024-08-20 |
| 11753558 | Dry erase inks and associated writing instruments | — | 2023-09-12 |
| RE49400 | Metallic ink composition and writing instrument containing same | — | 2023-01-31 |
| 11110738 | Writing instruments and associated methods | Bret R. Marschand | 2021-09-07 |
| 10245877 | Ink delivery system | Daniel Francis DeBartolo, Bret R. Marschand, Ismail Akram, Aidan Craigwood, Kathrin Holtzmann +2 more | 2019-04-02 |
| 9809722 | Transitorially erasable ink compositions and writing instruments containing same | Jiandong Zhu | 2017-11-07 |
| 9163153 | Metallic ink composition and writing instrument containing same | — | 2015-10-20 |
| 8889590 | Irreversible thermochromic ink compositions | — | 2014-11-18 |
| 8865621 | Irreversible color changing ink compositions | — | 2014-10-21 |
| 8846797 | Metallic ink composition and writing instrument containing same | Martin N. Sexton | 2014-09-30 |
| 8709973 | Irreversible thermochromic ink compositions | — | 2014-04-29 |
| 8664156 | Irreversible thermochromic ink compositions | — | 2014-03-04 |
| 8652996 | Irreversible thermochromic pigment capsules | — | 2014-02-18 |
| 7981210 | Capillary-action, glitter markers and ink compositions for same | Jennifer Carra | 2011-07-19 |
| 7488380 | Highlighting marking compositions, highlighting kits, and highlighted complexes | Cindy Duong | 2009-02-10 |
| 7481593 | Combination hydrophobic/hydrophilic filters/reservoirs for controlling fluid flow | Leighton Davies-Smith | 2009-01-27 |
| 7455724 | Decoder system | Leighton Davies-Smith | 2008-11-25 |
| 7442725 | Color changing correction fluid | Jiandong Zhu | 2008-10-28 |
| 7364614 | Capillary-action, glitter markers and ink compositions for same | Jennifer Carra | 2008-04-29 |
| 7163575 | Water-based, resin-free and solvent-free eradicable ball-pen inks | David Godbout | 2007-01-16 |
| 6905539 | Black eradicable ink, methods of eradication of the same, eradicable ink kit, and eradicated ink complex | Sanjay V. Patel, David Godbout | 2005-06-14 |
| 6478861 | Laser markable coating | Yoshikazu Mizobuchi | 2002-11-12 |
| 6261348 | Laser markable coating | Yoshikazu Mizobuchi | 2001-07-17 |