Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5833885 | Photochromic compounds | Martin Rickwood | 1998-11-10 |
| 5520853 | Photochromic compounds | Martin Rickwood, John David Hepworth, Christopher David Gabbutt | 1996-05-28 |
| 5446149 | Bridged spiroxazine photochromic compounds | Martin Rickwood | 1995-08-29 |
| 5446150 | Photochromic spiroxazine compounds | Martin Rickwood, Victoria E. Askew | 1995-08-29 |
| 5446151 | Photo reactive spiro-benzoxazine compounds | Martin Rickwood, John David Hepworth, Christopher David Gabbutt | 1995-08-29 |