Assignee
C3 INC
US5 patents
Top patents by PatentIndex Score
US5882786AMar 16, 1999
Gemstones formed of silicon carbide with diamond coating
C3 INC263 citations97
US5835205ANov 10, 1998
Optical testing system for distinguishing a silicon carbide gemstone from a diamond
C3 INC61 citations94
US5955735ASep 21, 1999
Apparatus and method for positively identifying synthetic silicon carbide gemstones
C3 INC40 citations92
US5723391AMar 3, 1998
Silicon carbide gemstones
C3 INC31 citations89
US5762896AJun 9, 1998
Silicon carbide gemstones
C3 INC15 citations79