Assignee
SIGRI GMBH
DE·16 granted patents·177 citations·filing 1984–1990
Top patents by PatentIndex Score
16 records- 0171US4629280AJoint threads carbon on graphite electrodeSIGRI GMBH·Filed 1985·Granted Dec 16, 1986·27 cites·1 claims
- 0264US5104518AProcess for the inhibition of the puffing of cokes produced from coal tar pitchesSIGRI GMBH·Filed 1990·Granted Apr 14, 1992·17 cites·22 claims
- 0356US4716572AMethod for coating carbon and graphite bodiesSIGRI GMBH·Filed 1985·Granted Dec 29, 1987·20 cites·12 claims
- 0453US4594722AGraphite electrode for arc furnaces and method for manufacturing sameSIGRI GMBH·Filed 1985·Granted Jun 10, 1986·13 cites·28 claims
- 0552US4639930APort for graphitization furnaceSIGRI GMBH·Filed 1985·Granted Jan 27, 1987·10 cites·14 claims
- 0650US4663010AAnode for electrochemical processSIGRI GMBH·Filed 1986·Granted May 5, 1987·8 cites·11 claims
- 0748US4615379AStorage body for a regeneratorSIGRI GMBH·Filed 1985·Granted Oct 7, 1986·12 cites·1 claims
- 0844US5068026AProcess for the production of non-puffing shaped carbon bodiesSIGRI GMBH·Filed 1990·Granted Nov 26, 1991·11 cites·11 claims
- 0942US4941692AAdhesive connection of tubes formed of carbon or graphiteSIGRI GMBH·Filed 1989·Granted Jul 17, 1990·11 cites·7 claims
- 1042US4921283AConnection of carbon or graphite tubesSIGRI GMBH·Filed 1989·Granted May 1, 1990·11 cites·6 claims
- 1142US4903641AMethod and apparatus for extracting saturated steam in the synthesis of hydrogen chloride gasSIGRI GMBH·Filed 1989·Granted Feb 27, 1990·12 cites·7 claims
- 1238US4698189AMethod for the manufacture of vitreous carbon bodiesSIGRI GMBH·Filed 1986·Granted Oct 6, 1987·7 cites·5 claims
- 1337US4589967ALining for an electrolysis cell for the production of aluminumSIGRI GMBH·Filed 1984·Granted May 20, 1986·8 cites·11 claims
- 1432US4691324AElectrode connectionSIGRI GMBH·Filed 1986·Granted Sep 1, 1987·4 cites·9 claims
- 1532US4651655AMethod for dissolving salt encrustations in a heat exchangerSIGRI GMBH·Filed 1986·Granted Mar 24, 1987·5 cites·11 claims
- 1621US4641321ACooled furnace head for heavy-current resistance furnacesSIGRI GMBH·Filed 1985·Granted Feb 3, 1987·1 cites·11 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →