Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8091869 | Adjustable spring pad | — | 2012-01-10 |
| 5835200 | Method and apparatus for examining an object | Martin P. Smith, Christopher M. Welbourn | 1998-11-10 |
| 5628410 | Classifying or sorting | Martin P. Smith | 1997-05-13 |
| 5505313 | Method and apparatus for detecting diamonds in a plurality of objects | Martin P. Smith | 1996-04-09 |
| 5361759 | Meconium monitoring system | Eric Serge Gilles Genevier, Philip J. Steer, Peter J. Danielian, Nigel J. Randall | 1994-11-08 |
| 5351117 | Sensing a narrow frequency band and gemstones | Andrew D. G. Stewart, Martin P. Smith, Martin Cooper, Christopher M. Welbourn, Paul Martyn Spear | 1994-09-27 |
| 5206699 | Sensing a narrow frequency band of radiation and gemstones | Andrew D. G. Stewart, Martin P. Smith, Daniel J. Brink, Martin Cooper, Christopher M. Welbourn +1 more | 1993-04-27 |
| 5076698 | Sensing the shape of an object | Martin P. Smith | 1991-12-31 |