Inventor
SMITH JAMES GORDON CHARTERS
GB17 patents
⚠️ This page may combine multiple inventors who share the name “SMITH JAMES GORDON CHARTERS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GERSAN ETS
7 patentsUS6187213B1Feb 13, 2001
Marking diamond
GERSAN ETS60 citations96
US6014208AJan 11, 2000
Examining a diamond
GERSAN ETS67 citations94
US5811824ASep 22, 1998
Method and an apparatus for testing whether a diamond has a layer of synthetic diamond deposited thereon
GERSAN ETS32 citations92
US5883388AMar 16, 1999
Examining a diamond
GERSAN ETS27 citations91
US6391215B1May 21, 2002
Diamond marking
GERSAN ETS32 citations89
US5880504AMar 9, 1999
Examining a diamond
GERSAN ETS17 citations83
US6358427B1Mar 19, 2002
Marking diamond
GERSAN ETS10 citations68
DE BEERS UK LTD
5 patentsUS9625393B2Apr 18, 2017
Gemstone viewer
DE BEERS UK LTD2 citations69
US11020771B2Jun 1, 2021
Apparatus for sorting gemstones
DE BEERS UK LTD1 citations62
US10215706B2Feb 26, 2019
Gemstone sparkle analysis
DE BEERS UK LTD0 citations51
US10345245B2Jul 9, 2019
Luminescence measurements in diamond
DE BEERS UK LTD0 citations50
US10082469B2Sep 25, 2018
Luminescence measurements in diamond
DE BEERS UK LTD1 citations50