Assignee
DERRICK MFG CORP
US·38 granted patents·2,994 citations·filing 1976–2003
Top patents by PatentIndex Score
38 records- 0198US5417859AUndulating screen for vibratory screening machine and method of fabrication thereofDERRICK MFG CORP·Filed 1994·Granted May 23, 1995·152 cites·21 claims
- 0298US5417858AScreen assembly for vibrating screening machineDERRICK MFG CORP·Filed 1993·Granted May 23, 1995·137 cites·32 claims
- 0398US5332101AScreen aligning, tensioning and sealing structure for vibratory screening machineDERRICK MFG CORP·Filed 1992·Granted Jul 26, 1994·112 cites·31 claims
- 0497US5958236AUndulating screen for vibratory screening machine and method of fabrication thereofDERRICK MFG CORP·Filed 1997·Granted Sep 28, 1999·117 cites·16 claims
- 0597US5876552AMethod of fabricating screen for vibratory screening machineDERRICK MFG CORP·Filed 1997·Granted Mar 2, 1999·121 cites·24 claims
- 0697US5417793AUndulating screen for vibratory screening machine and method of fabrication thereofDERRICK MFG CORP·Filed 1994·Granted May 23, 1995·114 cites·24 claims
- 0797US5221008AVibratory screening machine and non-clogging wear-reducing screen assembly thereforDERRICK MFG CORP·Filed 1991·Granted Jun 22, 1993·191 cites·40 claims
- 0895US5944993AScreen assembly for vibrating screening machineDERRICK MFG CORP·Filed 1997·Granted Aug 31, 1999·92 cites·48 claims
- 0995US4882054AVibratory screening machine with tiltable screen frame and adjustable discharge weirDERRICK MFG CORP·Filed 1988·Granted Nov 21, 1989·149 cites·23 claims
- 1095US4575421ANon-clogging wear-reducing screen assembly for vibrating screening machineDERRICK MFG CORP·Filed 1984·Granted Mar 11, 1986·155 cites·19 claims
- 1195US4033865ANon-clogging screen apparatusDERRICK MFG CORP·Filed 1976·Granted Jul 5, 1977·137 cites·4 claims
- 1294US6669027B1Vibratory screening machine and vibratory screen and screen tensioning structureDERRICK MFG CORP·Filed 1999·Granted Dec 30, 2003·92 cites·41 claims
- 1394US5720881AScreen assembly for vibrating screening machineDERRICK MFG CORP·Filed 1995·Granted Feb 24, 1998·82 cites·48 claims
- 1493US6820748B2Vibratory screening machine with stacked and staggered screening unitsDERRICK MFG CORP·Filed 2002·Granted Nov 23, 2004·60 cites·26 claims
- 1593US5636749AUndulating screen for vibratory screening machineDERRICK MFG CORP·Filed 1995·Granted Jun 10, 1997·96 cites·8 claims
- 1692US6564947B2Method of screening material utilizing a plurality of undulating screen assembliesDERRICK MFG CORP·Filed 2001·Granted May 20, 2003·34 cites·15 claims
- 1792US5868929AScreen assembly for vibrating screening machineDERRICK MFG CORP·Filed 1996·Granted Feb 9, 1999·77 cites·4 claims
- 1891US6053332AMethod of fabricating undulating screen for vibratory screening machineDERRICK MFG CORP·Filed 1999·Granted Apr 25, 2000·63 cites·4 claims
- 1991US5783077AUndulating screen for vibratory screening machineDERRICK MFG CORP·Filed 1995·Granted Jul 21, 1998·70 cites·133 claims
- 2091US4857176AReinforced molded polyurethane vibratory screenDERRICK MFG CORP·Filed 1988·Granted Aug 15, 1989·181 cites·20 claims
- 2191US4819809AReinforced polyurethane vibratory screenDERRICK MFG CORP·Filed 1987·Granted Apr 11, 1989·130 cites·24 claims
- 2290US4065382AMultiple screen apparatusDERRICK MFG CORP·Filed 1976·Granted Dec 27, 1977·58 cites·6 claims
- 2388US6000556AScreen assembly for vibratory screening machineDERRICK MFG CORP·Filed 1998·Granted Dec 14, 1999·63 cites·21 claims
- 2487US5330057AScreen and screen cloth for vibratory machine and method of manufacture thereofDERRICK MFG CORP·Filed 1993·Granted Jul 19, 1994·86 cites·33 claims
- 2586US5211291AVibratory separator plate for flake-like membersDERRICK MFG CORP·Filed 1991·Granted May 18, 1993·69 cites·31 claims
- 2683US6971982B1Apparatus for centrifuging a slurryDERRICK MFG CORP·Filed 2002·Granted Dec 6, 2005·31 cites·4 claims
- 2783US6431366B2Vibratory screening machine with stacked and staggered screening unitsDERRICK MFG CORP·Filed 1999·Granted Aug 13, 2002·53 cites·18 claims
- 2882US6905452B1Apparatus for centrifuging a slurryDERRICK MFG CORP·Filed 2002·Granted Jun 14, 2005·30 cites·9 claims
- 2981US6340089B1Method of fabricating undulating screen for vibratory screening machineDERRICK MFG CORP·Filed 2000·Granted Jan 22, 2002·17 cites·15 claims
- 3080US6220448B1Screen assembly for vibratory screening machineDERRICK MFG CORP·Filed 1997·Granted Apr 24, 2001·41 cites·24 claims
- 3179US6250476B1Municipal waste separatorDERRICK MFG CORP·Filed 1999·Granted Jun 26, 2001·47 cites·19 claims
- 3279US5673797AScreen assembly for vibratory screening machine and method of fabrication thereofDERRICK MFG CORP·Filed 1995·Granted Oct 7, 1997·38 cites·35 claims
- 3377US4085776AFlow dividerDERRICK MFG CORP·Filed 1976·Granted Apr 25, 1978·29 cites·7 claims
- 3470US6580189B2Vibratory motor having a self-contained continuous bearing lubrication systemDERRICK MFG CORP·Filed 2001·Granted Jun 17, 2003·17 cites·44 claims
- 3570US6161700AVibratory screening screen and method of fabrication thereofDERRICK MFG CORP·Filed 1999·Granted Dec 19, 2000·29 cites·4 claims
- 3663US7025210B2Method and apparatus for attenuating sound from vibratory screening machinesDERRICK MFG CORP·Filed 2003·Granted Apr 11, 2006·9 cites·9 claims
- 3755US5888336AScreen assembly for vibratory screening machine and method of fabrication thereofDERRICK MFG CORP·Filed 1997·Granted Mar 30, 1999·12 cites·25 claims
- 3835US6153041AScreen assembly for vibratory screening machine and method of fabrication thereofDERRICK MFG CORP·Filed 1999·Granted Nov 28, 2000·3 cites·6 claims
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