Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12157826 | Ink formulations and associated writing instruments | — | 2024-12-03 |
| 10687615 | Lifting table | Jianjun Yu, Xinfeng Zhang | 2020-06-23 |
| 9809722 | Transitorially erasable ink compositions and writing instruments containing same | Wing Sum Vincent Kwan | 2017-11-07 |
| 9109126 | Ink compositions comprising colorant particles containing polymeric particles | — | 2015-08-18 |
| 8110615 | Correction fluids | John Thompson, Richard J. Kaiser, George Korper | 2012-02-07 |
| 7655082 | Ink compositions containing an emulsion | — | 2010-02-02 |
| 7442725 | Color changing correction fluid | Wing Sum Vincent Kwan | 2008-10-28 |