| 11020771 |
Apparatus for sorting gemstones |
— |
2021-06-01 |
| 10571409 |
X-ray apparatus |
Ben Price, Michael Beechey |
2020-02-25 |
| 10571410 |
X-ray apparatus |
Ben Price, Michael Beechey |
2020-02-25 |
| 10365233 |
X-ray apparatus |
Ben Price, Michael Beechey |
2019-07-30 |
| 10345245 |
Luminescence measurements in diamond |
Colin McGuinness, David Fisher |
2019-07-09 |
| 10215706 |
Gemstone sparkle analysis |
— |
2019-02-26 |
| 10082469 |
Luminescence measurements in diamond |
Colin McGuinness, David Fisher |
2018-09-25 |
| 9625393 |
Gemstone viewer |
Michael Peter Gaukroger, Peter Stanley Rose |
2017-04-18 |
| 9618443 |
Gemstone inspection |
Timothy Howard Leaton |
2017-04-11 |
| 9322785 |
Inclusion detection in polished gemstones |
Graham Ralph Powell |
2016-04-26 |
| 9250193 |
Gemstone sparkle analysis |
— |
2016-02-02 |
| 9188542 |
Gemstone viewer |
Michael Peter Gaukroger, Peter Stanley Rose |
2015-11-17 |
| 9079331 |
Gemstone alignment |
Graham Ralph Powell |
2015-07-14 |
| D682905 |
Gemstone viewer |
Jonathan G Kendall, Peter Stanley Rose, Maxwell Ralph Willis, Siobhan D'Gama, Christopher Daws +3 more |
2013-05-21 |
| 7879192 |
Multiply former apparatus |
Gregory Michael Welcher |
2011-02-01 |
| 6391215 |
Diamond marking |
Andrew D. G. Stewart |
2002-05-21 |
| 6358427 |
Marking diamond |
Keith Barry Guy, Graham Ralph Powell, Michael Peter Gaukroger |
2002-03-19 |
| 6187213 |
Marking diamond |
Martin Cooper |
2001-02-13 |
| 6014208 |
Examining a diamond |
Christopher M. Welbourn, Martin P. Smith, Paul Martyn Spear, Philip Maurice Martineau, Martin Cooper |
2000-01-11 |
| 5883388 |
Examining a diamond |
Martin P. Smith, Martin Cooper, Ricardo Simon Sussmann |
1999-03-16 |
| 5880504 |
Examining a diamond |
Martin P. Smith, Martin Cooper, Christopher M. Welbourn, Philip Maurice Martineau |
1999-03-09 |
| 5811824 |
Method and an apparatus for testing whether a diamond has a layer of synthetic diamond deposited thereon |
Martin P. Smith, Martin Cooper |
1998-09-22 |
| 5603414 |
Detecting diamonds in a rock sample |
Marie-Line Rooney, Martin P. Smith, Martin Cooper |
1997-02-18 |
| 4934892 |
Envelope processing apparatus |
Paul E. Haley |
1990-06-19 |
| 4443215 |
Sterile docking process, apparatus and system |
— |
1984-04-17 |