Assignee
SIGRI GMBH
DE16 patents
Top patents by PatentIndex Score
US4629280ADec 16, 1986
Joint threads carbon on graphite electrode
SIGRI GMBH27 citations86
US4716572ADec 29, 1987
Method for coating carbon and graphite bodies
SIGRI GMBH20 citations76
US4594722AJun 10, 1986
Graphite electrode for arc furnaces and method for manufacturing same
SIGRI GMBH13 citations73
US5104518AApr 14, 1992
Process for the inhibition of the puffing of cokes produced from coal tar pitches
SIGRI GMBH17 citations71
US4941692AJul 17, 1990
Adhesive connection of tubes formed of carbon or graphite
SIGRI GMBH11 citations71
US4921283AMay 1, 1990
Connection of carbon or graphite tubes
SIGRI GMBH11 citations71
US4615379AOct 7, 1986
Storage body for a regenerator
SIGRI GMBH12 citations71
US4698189AOct 6, 1987
Method for the manufacture of vitreous carbon bodies
SIGRI GMBH7 citations69
US4663010AMay 5, 1987
Anode for electrochemical process
SIGRI GMBH8 citations68
US5068026ANov 26, 1991
Process for the production of non-puffing shaped carbon bodies
SIGRI GMBH11 citations65
US4903641AFeb 27, 1990
Method and apparatus for extracting saturated steam in the synthesis of hydrogen chloride gas
SIGRI GMBH12 citations64
US4691324ASep 1, 1987
Electrode connection
SIGRI GMBH4 citations60
US4651655AMar 24, 1987
Method for dissolving salt encrustations in a heat exchanger
SIGRI GMBH5 citations60
US4639930AJan 27, 1987
Port for graphitization furnace
SIGRI GMBH10 citations59
US4589967AMay 20, 1986
Lining for an electrolysis cell for the production of aluminum
SIGRI GMBH8 citations58
US4641321AFeb 3, 1987
Cooled furnace head for heavy-current resistance furnaces
SIGRI GMBH1 citations43