| 11746436 |
Single crystal chemical vapor deposited synthetic diamond materials having uniform color |
Harpreet Kaur Dhillon, Ian Friel, Daniel James Twitchen, Sarah Louise Geoghegan, Helen Jennifer Gallon +1 more |
2023-09-05 |
| 10851471 |
Optical quality diamond material |
Herman Philip Godfried, Geoffrey Alan Scarsbrook, Daniel James Twitchen, Evert Pieter Houwman, Wilhelmus Gertruda Maria Nelissen +2 more |
2020-12-01 |
| 10480097 |
Synthetic CVD diamond |
Daniel James Twitchen, Andrew Bennett, Rizwan Uddin Ahmad Khan |
2019-11-19 |
| 10273598 |
Synthetic CVD diamond |
Daniel James Twitchen, Andrew Bennett, Rizwan Uddin Ahmad Khan |
2019-04-30 |
| 10125434 |
Optical quality diamond material |
Herman Philip Godfried, Geoffrey Alan Scarsbrook, Daniel James Twitchen, Evert Pieter Houwman, WILHEMUS GERTRUDA MARIA NELISSEN +2 more |
2018-11-13 |
| 9816202 |
Single crystal diamond |
Geoffrey Alan Scarsbrook, Daniel James Twitchen |
2017-11-14 |
| 9682864 |
Dislocation engineering in single crystal synthetic diamond material |
Harpreet Kaur Dhillon, Nicholas Matthew Davies, Rizwan Uddin Ahmad Khan, Daniel James Twitchen |
2017-06-20 |
| 9551090 |
Optical quality diamond material |
Herman Philip Godfried, Geoffrey Alan Scarsbrook, Daniel James Twitchen, Evert Pieter Houwman, Wilhelmus Gertruda Maria Nelissen +2 more |
2017-01-24 |
| 9518338 |
Single crystal diamond |
Geoffrey Alan Scarsbrook, Daniel James Twitchen |
2016-12-13 |
| 9133566 |
High crystalline quality synthetic diamond |
Daniel James Twitchen, Grant Charles Summerton, Ian Friel, John Olaf Hansen, Keith Barry Guy +4 more |
2015-09-15 |
| 9115443 |
Coloured diamond |
Daniel James Twitchen, Geoffrey Alan Scarsbrook, Barbel Dorn, Michael Cooper |
2015-08-25 |
| 9103050 |
Single crystal diamond prepared by CVD |
Geoffrey Alan Scarsbrook, John Lloyd Collins, Ricardo Simon Sussmann, Barbel Dorn, Andrew John Whitehead +1 more |
2015-08-11 |
| 8986645 |
Diamond |
Daniel James Twitchen, Geoffrey Alan Scarsbrook, Paul Martyn Spear, Stephen David Williams, Ian Friel |
2015-03-24 |
| 8936774 |
Optical quality diamond material |
Herman Philip Godfried, Geoffrey Alan Scarsbrook, Daniel James Twitchen, Evert Pieter Houwman, Wilhelmus Gertruda Maria Nelissen +2 more |
2015-01-20 |
| 8501143 |
Single crystal diamond prepared by CVD |
Geoffrey Alan Scarsbrook, John Lloyd Collins, Ricardo Simon Sussmann, Barbel Dorn, Andrew John Whitehead +1 more |
2013-08-06 |
| 8192713 |
Method of incorporating a mark in CVD diamond |
Daniel James Twitchen, Geoffrey Alan Scarsbrook, Paul Martyn Spear |
2012-06-05 |
| 8110041 |
Coloured diamond |
Daniel James Twitchen, Geoffrey Alan Scarsbrook |
2012-02-07 |
| 7964280 |
High colour diamond layer |
Stephen David Williams, Daniel James Twitchen, Geoffrey Alan Scarsbrook, Ian Friel |
2011-06-21 |
| 7910083 |
Coloured diamond |
Daniel James Twitchen, Geoffrey Alan Scarsbrook, Barbel Dorn, Michael Cooper |
2011-03-22 |
| 7887628 |
Thick single crystal diamond layer method for making it and gemstones produced from the layer |
Geoffrey Alan Scarsbrook, Barbel Dorn, Michael Cooper, John Lloyd Collins, Andrew John Whitehead +2 more |
2011-02-15 |
| 7740824 |
Optical quality diamond material |
Herman Philip Godfried, Geoffrey Alan Scarsbrook, Daniel James Twitchen, Evert Pieter Houwman, Wilhelmus Gertruda Maria Nelissen +2 more |
2010-06-22 |
| 7172655 |
Colored diamond |
Daniel James Twitchen, Geoffrey Alan Scarsbrook |
2007-02-06 |
| 7160617 |
Boron doped diamond |
Geoffrey Alan Scarsbrook, Daniel James Twitchen, Andrew John Whitehead, Michael Cooper, Barbel Dorn |
2007-01-09 |
| 7128974 |
Thick single crystal diamond layer method for making it and gemstones produced from the layer |
Geoffrey Alan Scarsbrook, Barbel Dorn, Michael Cooper, John Lloyd Collins, Andrew John Whitehead +2 more |
2006-10-31 |
| 6014208 |
Examining a diamond |
Christopher M. Welbourn, Martin P. Smith, James Gordon Charters Smith, Paul Martyn Spear, Martin Cooper |
2000-01-11 |