Assignee
DRAVO CORP
123 granted patents·2,073 citations·filing 1972–1987
Top patents by PatentIndex Score
123 records- 0198US3959084AProcess for cooling of cokeDRAVO CORP·Filed 1974·Granted May 25, 1976·122 cites·3 claims
- 0294US4439307AHeating process gas for indirect shale oil retorting through the combustion of residual carbon in oil depleted shaleDRAVO CORP·Filed 1983·Granted Mar 27, 1984·130 cites·7 claims
- 0389US4238120ASealing device for sinter coolerDRAVO CORP·Filed 1979·Granted Dec 9, 1980·25 cites·3 claims
- 0489US4179374AApparatus for the treatment of wastewaterDRAVO CORP·Filed 1977·Granted Dec 18, 1979·64 cites·7 claims
- 0587US4340207AWaste heat recovery apparatusDRAVO CORP·Filed 1979·Granted Jul 20, 1982·26 cites·4 claims
- 0687US4219470AProcess for preparing a protein concentrate and the product obtained therebyDRAVO CORP·Filed 1978·Granted Aug 26, 1980·29 cites·13 claims
- 0786US4699187ADust control in hoppersDRAVO CORP·Filed 1986·Granted Oct 13, 1987·43 cites·22 claims
- 0886US4306895ACoal stacking tower dust control systemDRAVO CORP·Filed 1980·Granted Dec 22, 1981·56 cites·8 claims
- 0986US4144229AProcess for preparing a flour and the product obtained therebyDRAVO CORP·Filed 1976·Granted Mar 13, 1979·28 cites·20 claims
- 1084US4273312AMethod of process off-gas controlDRAVO CORP·Filed 1979·Granted Jun 16, 1981·14 cites·11 claims
- 1183US4222851ARecovery of asphalt shingle components by solvent extractionDRAVO CORP·Filed 1978·Granted Sep 16, 1980·44 cites·14 claims
- 1283US4067727ASintering processDRAVO CORP·Filed 1976·Granted Jan 10, 1978·20 cites·11 claims
- 1383US3947001ACombustion systemDRAVO CORP·Filed 1975·Granted Mar 30, 1976·27 cites·9 claims
- 1482US3977205ARefrigerant mass flow control at low ambient temperaturesDRAVO CORP·Filed 1975·Granted Aug 31, 1976·60 cites·6 claims
- 1580US4603225AProcess for separating dimethyl ether from a hydrocarbon mixture containing the sameDRAVO CORP·Filed 1985·Granted Jul 29, 1986·33 cites·27 claims
- 1680US4548315ATethered vehicle for moving bulk materialDRAVO CORP·Filed 1983·Granted Oct 22, 1985·27 cites·29 claims
- 1779US4609321ARotary car dumper with dust collection systemDRAVO CORP·Filed 1984·Granted Sep 2, 1986·28 cites·5 claims
- 1879US4479749ARotary car dumper installation with integral dust collectionDRAVO CORP·Filed 1982·Granted Oct 30, 1984·28 cites·9 claims
- 1979US4359417AProcess for extracting oleaginous seed materials particularly cottonseed with aqueous alcoholDRAVO CORP·Filed 1981·Granted Nov 16, 1982·27 cites·27 claims
- 2078US4087334ASeal arrangement for a rotary drum assemblyDRAVO CORP·Filed 1976·Granted May 2, 1978·20 cites·16 claims
- 2178US3970764AProcess for preparing a protein concentrate with minimal protein denaturationDRAVO CORP·Filed 1974·Granted Jul 20, 1976·18 cites·8 claims
- 2278US3966982AProcess and apparatus for treating oleaginous seed materialDRAVO CORP·Filed 1973·Granted Jun 29, 1976·44 cites·35 claims
- 2376US4263857ATraveling grate stoker for the combustion of difficultly ignited fuelsDRAVO CORP·Filed 1979·Granted Apr 28, 1981·25 cites·7 claims
- 2476US3992170AMethod and apparatus for melting ice in saline water conversion systemsDRAVO CORP·Filed 1975·Granted Nov 16, 1976·33 cites·6 claims
- 2573US4420404AProcess for dewatering fine granular materialsDRAVO CORP·Filed 1981·Granted Dec 13, 1983·35 cites·4 claims
- 2673US4405050AQuick roll adjustment for a roller screen conveyorDRAVO CORP·Filed 1981·Granted Sep 20, 1983·29 cites·21 claims
- 2772US4425220AMethod of and apparatus for processing of oil shaleDRAVO CORP·Filed 1982·Granted Jan 10, 1984·26 cites·4 claims
- 2872US4255089AMethod of controlling series fans driving a variable loadDRAVO CORP·Filed 1979·Granted Mar 10, 1981·29 cites·13 claims
- 2971US4626418ARemoval of SO2 from SO2 -containing gasesDRAVO CORP·Filed 1985·Granted Dec 2, 1986·32 cites·22 claims
- 3071US4133718AMethod for agglomerating finely divided agglomerative materials in a rotary drum assemblyDRAVO CORP·Filed 1977·Granted Jan 9, 1979·21 cites·7 claims
- 3170US4363411AHammerhead crane with plural shuttle trolleys, a load trolley and movable counterweight meansDRAVO CORP·Filed 1978·Granted Dec 14, 1982·25 cites·11 claims
- 3269US4422901AApparatus for the continuous solvent extraction of bitumen from oil-bearing sandDRAVO CORP·Filed 1982·Granted Dec 27, 1983·20 cites·3 claims
- 3368US4448667AProcess for solvent extraction of bitumen from oil sandDRAVO CORP·Filed 1982·Granted May 15, 1984·18 cites·3 claims
- 3468US4268204AContinuous ship unloaderDRAVO CORP·Filed 1979·Granted May 19, 1981·25 cites·7 claims
- 3568US4221341ASinter breakerDRAVO CORP·Filed 1978·Granted Sep 9, 1980·18 cites·7 claims
- 3667US4219416AProcess for recovering molybdenum and tungsten from mining wastewaterDRAVO CORP·Filed 1978·Granted Aug 26, 1980·22 cites·10 claims
- 3767US4113413ARotary scraper in a rotary drum assemblyDRAVO CORP·Filed 1976·Granted Sep 12, 1978·20 cites·13 claims
- 3866US3996780AMethod and apparatus for making an improved serrated grating barDRAVO CORP·Filed 1975·Granted Dec 14, 1976·27 cites·7 claims
- 3965US4655401ARotary car dumper with lump breaker apparatusDRAVO CORP·Filed 1985·Granted Apr 7, 1987·22 cites·13 claims
- 4065US4065295ASinter machine control as a function of waste gas temperatureDRAVO CORP·Filed 1976·Granted Dec 27, 1977·14 cites·3 claims
- 4164US4501539AApparatus for removing the liquid phase from a slurry of fine granular materialDRAVO CORP·Filed 1983·Granted Feb 26, 1985·15 cites·28 claims
- 4263US4714097ADust containment system for bulk cargo containersDRAVO CORP·Filed 1986·Granted Dec 22, 1987·25 cites·15 claims
- 4363US4689007AProcess of thermally treating lump or agglomerated materials on a travelling grateDRAVO CORP·Filed 1985·Granted Aug 25, 1987·23 cites·9 claims
- 4463US4408987ACircular traveling grate machine for process requiring minimum gas leakageDRAVO CORP·Filed 1982·Granted Oct 11, 1983·13 cites·10 claims
- 4563US4365725ABasket with swing away double locking handleDRAVO CORP·Filed 1981·Granted Dec 28, 1982·28 cites·10 claims
- 4663US3993535AMultiple effect evaporation processDRAVO CORP·Filed 1974·Granted Nov 23, 1976·19 cites·17 claims
- 4762US4274836AMethod for improving bed firing characteristics and inhibiting coalescence of coal pelletsDRAVO CORP·Filed 1979·Granted Jun 23, 1981·16 cites·10 claims
- 4862US4219417AWastewater flotation utilizing streaming potential adjustmentDRAVO CORP·Filed 1978·Granted Aug 26, 1980·18 cites·11 claims
- 4962US4004696AMaterial handling apparatus with load compensated counterweight systemDRAVO CORP·Filed 1975·Granted Jan 25, 1977·14 cites·9 claims
- 5061US4222872AReclamation of molybdenum or other heavy metals from wastewater treatment skimmingsDRAVO CORP·Filed 1979·Granted Sep 16, 1980·11 cites·8 claims
Showing the top 50 of 123 patent records by PatentIndex Score.
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