Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11793739 | Hair shaping material | Patrick James Colver, Neil James, Christopher Michael Carr, David Malcolm Lewis, Muriel Laure Aude Rigout | 2023-10-24 |
| 9358578 | Printing | David Malcolm Lewis | 2016-06-07 |
| 8157905 | Security inks containing infrared absorbing metal compounds | David Malcolm Lewis | 2012-04-17 |
| 7442780 | Reactive dye compounds | Wei Dong He, David Malcolm Lewis | 2008-10-28 |
| 6790943 | Reactive dye compounds | David Malcolm Lewis, Gilles Genain, Wei Dong He, Taher Yousaf | 2004-09-14 |
| 6723834 | Reactive dye compounds | Dong Wei He, David Malcolm Lewis, Gilles Yves Marie Fernand Ganain, Taher Yousaf | 2004-04-20 |
| 6350872 | Salt free dyeing of cellulosic fibers with anionic dyes | Howard E. Virkler, D. Michael Lewis | 2002-02-26 |