Inventor · disambiguated record
Michael Dettmers
Also filed as: DETTMERS MICHAEL
26 granted patents·1 pending application·176 citations·filing 1978–2006
96Inventor score
Top patents by PatentIndex Score
27 records- 0165US6073654AHydraulically trippable check valve for underground mine support hydraulicsDBT GMBH·Filed 1999·Granted Jun 13, 2000·25 cites·47 claims
- 0261US4169689ATensioning a longwall mineral mining installationGEWERK EISENHUETTE WESTFALIA·Filed 1978·Granted Oct 2, 1979·10 cites·29 claims
- 0359US4327628AHydraulic roof support control systemGEWERK EISENHUETTE WESTFALIA·Filed 1980·Granted May 4, 1982·10 cites·23 claims
- 0458US7428861B2Valve for hydraulic props of shield-type support frames, and shield-type support frameDBT GMBH·Filed 2004·Granted Sep 30, 2008·7 cites·16 claims
- 0555US4702148AControl of the actuation of hydraulic consumersGEWERK EISENHUETTE WESTFALIA·Filed 1986·Granted Oct 27, 1987·14 cites·13 claims
- 0654US5060556AArrangement for emergency operation of hydraulic appliance in an electro-hydraulically controlled mineral mining installationGEWERK EISENHUETTE WESTFALIA·Filed 1990·Granted Oct 29, 1991·16 cites·7 claims
- 0753US6609539B2Hydraulically operated directional control valveDBT GMBH·Filed 2001·Granted Aug 26, 2003·5 cites·16 claims
- 0852US6779776B2Intrinsically safe electrically magnetically operated hydraulic valveDBT GMBH·Filed 2003·Granted Aug 24, 2004·6 cites·12 claims
- 0952US5159872AValve units for use in hydraulic control systems of mining equipmentGEWERK EISENHUETTE WESTFALIA·Filed 1991·Granted Nov 3, 1992·15 cites·14 claims
- 1050US4572709AControl apparatusGEWERK EISENHUETTE WESTFALIA·Filed 1983·Granted Feb 25, 1986·6 cites·31 claims
- 1149US4422807AMine roof supportsGEWERK EISENHUETTE WESTFALIA·Filed 1982·Granted Dec 27, 1983·6 cites·13 claims
- 1248US7740421B2Arrangement for the admission of pressurized water to spray systemsDBT GMBH·Filed 2006·Granted Jun 22, 2010·0 cites·8 claims
- 1348US7237983B2Hydraulic shield supportDBT GMBH·Filed 2004·Granted Jul 3, 2007·3 cites·19 claims
- 1447US6481933B1Powered support frame for large seam thicknesses with controlled gap sealing platesDBT GMBH·Filed 2000·Granted Nov 19, 2002·5 cites·11 claims
- 1544US6616122B2Electromagnet switching deviceDBT GMBH·Filed 2002·Granted Sep 9, 2003·2 cites·11 claims
- 1644US4613257AHydraulic control arrangementGEWERK EISENHUETTE WESTFALIA·Filed 1983·Granted Sep 23, 1986·5 cites·25 claims
- 1743US4391181AHydraulic control systems for mining apparatusGEWERK EISENHUETTE WESTFALIA·Filed 1980·Granted Jul 5, 1983·5 cites·4 claims
- 1842US4534681AMine roof supportsGEWERK EISENHUETTE WESTFALIA·Filed 1983·Granted Aug 13, 1985·4 cites·4 claims
- 1942US4247226AHydraulic conduit systems for mine installationsGEWERK EISENHUETTE WESTFALIA·Filed 1978·Granted Jan 27, 1981·4 cites·6 claims
- 2041US6398181B1Valve arrangementDBT GMBH·Filed 1999·Granted Jun 4, 2002·6 cites·9 claims
- 2140US7489216B2Housing cover for switching solenoid housingDBT GMBH·Filed 2006·Granted Feb 10, 2009·0 cites·14 claims
- 2240US5157947ABalanced hydraulic valve devicesGEWERK EISENHUETTE WESTFALIA·Filed 1989·Granted Oct 27, 1992·9 cites·3 claims
- 2338US4537221AHydraulic control devices for use with mining apparatusGEWERK EISENHUETTE WESTFALIA·Filed 1984·Granted Aug 27, 1985·3 cites·9 claims
- 2438US2006219306A1Hydraulically switchable directional control valveDETTMERS MICHAEL·Filed 2004·Application pending·0 cites
- 2537US5427142AValve device for use in electro-hydraulic control systems of mining installationsWESTFALIA BECORIT IND TECH·Filed 1993·Granted Jun 27, 1995·6 cites·20 claims
- 2637US4440522AHydraulic control arrangement for a roof support unit of a mineral mining installationGEWERK EISENHUETTE WESTFALIA·Filed 1980·Granted Apr 3, 1984·3 cites·17 claims
- 2730US4907779AElectro-magnetically operated valve devicesGEWERK EISENHUETTE WESTFALIA·Filed 1989·Granted Mar 13, 1990·1 cites·12 claims
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