Assignee
SIGRI ELEKTROGRAPHIT GMBH
24 granted patents·506 citations·filing 1973–1983
Top patents by PatentIndex Score
24 records- 0195US4091083AMethod for the production of graphite-hydrogensulfateSIGRI ELEKTROGRAPHIT GMBH·Filed 1977·Granted May 23, 1978·90 cites·5 claims
- 0286US4029566AElectrode for electrochemical processes and method of producing the sameSIGRI ELEKTROGRAPHIT GMBH·Filed 1975·Granted Jun 14, 1977·38 cites·9 claims
- 0385US4252629AElectrode for electrochemical processes especially electrowinning and method for manufacturing sameSIGRI ELEKTROGRAPHIT GMBH·Filed 1979·Granted Feb 24, 1981·36 cites·6 claims
- 0484US4017673AMethod and apparatus for graphitization of carbon materialsSIGRI ELEKTROGRAPHIT GMBH·Filed 1975·Granted Apr 12, 1977·31 cites·12 claims
- 0580US4211594AJoining together shaped bodies of polytetrafluoroethyleneSIGRI ELEKTROGRAPHIT GMBH·Filed 1978·Granted Jul 8, 1980·43 cites·1 claims
- 0680US4197149AMethod for joining together shaped bodies of polytetrafluoroethyleneSIGRI ELEKTROGRAPHIT GMBH·Filed 1978·Granted Apr 8, 1980·42 cites·14 claims
- 0776US4474233ATube bundle heat exchangerSIGRI ELEKTROGRAPHIT GMBH·Filed 1982·Granted Oct 2, 1984·34 cites·2 claims
- 0872US3936535AMethod of producing fiber-reinforced composite membersSIGRI ELEKTROGRAPHIT GMBH·Filed 1973·Granted Feb 3, 1976·25 cites·6 claims
- 0970US4425820AConnecting rod of a composite material and method for manufacturing the sameSIGRI ELEKTROGRAPHIT GMBH·Filed 1981·Granted Jan 17, 1984·24 cites·5 claims
- 1066US4482314AMethod for heating carbon blanksSIGRI ELEKTROGRAPHIT GMBH·Filed 1983·Granted Nov 13, 1984·16 cites·5 claims
- 1166US4111794AMethod of producing pitch cokeSIGRI ELEKTROGRAPHIT GMBH·Filed 1977·Granted Sep 5, 1978·11 cites·5 claims
- 1266US4015068AGraphitization furnaceSIGRI ELEKTROGRAPHIT GMBH·Filed 1975·Granted Mar 29, 1977·27 cites·3 claims
- 1361US4366191AMethod of increasing the strength of carbon and graphite membersSIGRI ELEKTROGRAPHIT GMBH·Filed 1978·Granted Dec 28, 1982·18 cites·8 claims
- 1455US4315575AVacuum support for burst protection deviceSIGRI ELEKTROGRAPHIT GMBH·Filed 1980·Granted Feb 16, 1982·12 cites·2 claims
- 1550US4137150AMethod for the manufacture of a coal-tar pitch cokeSIGRI ELEKTROGRAPHIT GMBH·Filed 1977·Granted Jan 30, 1979·6 cites·3 claims
- 1650US4078988AElectrode for electrochemical processes and method of producing the sameSIGRI ELEKTROGRAPHIT GMBH·Filed 1977·Granted Mar 14, 1978·7 cites·10 claims
- 1747US4216266AFlexible graphite sheet material treated with an alkali metal salt containing at least one of the elements chromium, molybdenum and tungstenSIGRI ELEKTROGRAPHIT GMBH·Filed 1978·Granted Aug 5, 1980·10 cites·14 claims
- 1842US4431686AMethod for coating a porous electrodeSIGRI ELEKTROGRAPHIT GMBH·Filed 1982·Granted Feb 14, 1984·8 cites·8 claims
- 1939US4179289AElectrode for electrochemical processes and method of producing the sameSIGRI ELEKTROGRAPHIT GMBH·Filed 1977·Granted Dec 18, 1979·4 cites·1 claims
- 2037US4296177AFlexible graphite sheet, material or layer containing metal molybdateSIGRI ELEKTROGRAPHIT GMBH·Filed 1979·Granted Oct 20, 1981·6 cites·7 claims
- 2137US4255363AColumn sealSIGRI ELEKTROGRAPHIT GMBH·Filed 1979·Granted Mar 10, 1981·8 cites·4 claims
- 2234US4001487ASystem for supplying current to a group of high-current resistance furnaces through a plurality of transformersSIGRI ELEKTROGRAPHIT GMBH·Filed 1975·Granted Jan 4, 1977·5 cites·5 claims
- 2321US4369683ADischarging device for an extrusion pressSIGRI ELEKTROGRAPHIT GMBH·Filed 1981·Granted Jan 25, 1983·4 cites·3 claims
- 2413US4507860AProduction line for graphite nipplesSIGRI ELEKTROGRAPHIT GMBH·Filed 1982·Granted Apr 2, 1985·1 cites·10 claims
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