Assignee
CHIYODA CHEM ENG CONSTRUCT CO
121 granted patents·4,387 citations·filing 1972–2003
Top patents by PatentIndex Score
121 records- 0197US4424142ACatalyst for hydrotreatment of heavy hydrocarbon oilsCHIYODA CHEM ENG CONSTRUCT CO·Filed 1981·Granted Jan 3, 1984·106 cites·11 claims
- 0297US4422960ACatalysts for hydrotreatment of heavy hydrocarbon oils containing asphaltenesCHIYODA CHEM ENG CONSTRUCT CO·Filed 1980·Granted Dec 27, 1983·164 cites·30 claims
- 0397US4248852AProcess for the production of alumina suitable for use as a catalyst carrierCHIYODA CHEM ENG CONSTRUCT CO·Filed 1979·Granted Feb 3, 1981·110 cites·15 claims
- 0496US4440631AProcess for hydrocracking heavy hydrocarbon oils and catalyst thereforCHIYODA CHEM ENG CONSTRUCT CO·Filed 1983·Granted Apr 3, 1984·151 cites·6 claims
- 0596US4196102ACatalysts for demetallization treatment of _hydrocarbons supported on sepioliteCHIYODA CHEM ENG CONSTRUCT CO·Filed 1978·Granted Apr 1, 1980·109 cites·35 claims
- 0696US4191636AProcess for hydrotreating heavy hydrocarbon oilCHIYODA CHEM ENG CONSTRUCT CO·Filed 1978·Granted Mar 4, 1980·111 cites·11 claims
- 0795US5363655AMethod for liquefying natural gasCHIYODA CHEM ENG CONSTRUCT CO·Filed 1993·Granted Nov 15, 1994·107 cites·12 claims
- 0895US4444655AHydrotreatment of heavy hydrocarbon oils containing asphaltenes, and catalysts thereforCHIYODA CHEM ENG CONSTRUCT CO·Filed 1982·Granted Apr 24, 1984·74 cites·15 claims
- 0995US4367164ACatalysts for hydrotreating heavy hydrocarbon oils and a method of preparing such catalystsCHIYODA CHEM ENG CONSTRUCT CO·Filed 1980·Granted Jan 4, 1983·90 cites·14 claims
- 1094US5123836AMethod for the combustion treatment of toxic gas-containing waste gasCHIYODA CHEM ENG CONSTRUCT CO·Filed 1989·Granted Jun 23, 1992·116 cites·22 claims
- 1194US4525267AProcess for hydrocracking hydrocarbons with hydrotreatment-regeneration of spent catalystCHIYODA CHEM ENG CONSTRUCT CO·Filed 1981·Granted Jun 25, 1985·87 cites·24 claims
- 1294US4239515AGas-liquid contact reaction apparatusCHIYODA CHEM ENG CONSTRUCT CO·Filed 1979·Granted Dec 16, 1980·101 cites·5 claims
- 1391US4012340AProcess for preparing catalysts for hydrodesulfurizationCHIYODA CHEM ENG CONSTRUCT CO·Filed 1975·Granted Mar 15, 1977·52 cites·7 claims
- 1490US5689141ACompressor drive system for a natural gas liquefaction plant having an electric motor generator to feed excess power to the main power sourceCHIYODA CHEM ENG CONSTRUCT CO·Filed 1995·Granted Nov 18, 1997·107 cites·4 claims
- 1590US4256573AProcess for biological treatment of waste water in downflow operationCHIYODA CHEM ENG CONSTRUCT CO·Filed 1979·Granted Mar 17, 1981·41 cites·7 claims
- 1690US4233137AMethod of heat recovering from high temperature thermally cracked hydrocarbonsCHIYODA CHEM ENG CONSTRUCT CO·Filed 1979·Granted Nov 11, 1980·51 cites·11 claims
- 1790US4011298AMethod for simultaneous removal of SOx and NOxCHIYODA CHEM ENG CONSTRUCT CO·Filed 1974·Granted Mar 8, 1977·72 cites·4 claims
- 1889US6066762AProcess for the production of carbonyl compoundCHIYODA CHEM ENG CONSTRUCT CO·Filed 1997·Granted May 23, 2000·45 cites·24 claims
- 1989US6062041AMethod for liquefying natural gasCHIYODA CHEM ENG CONSTRUCT CO·Filed 1997·Granted May 16, 2000·80 cites·16 claims
- 2089US4454038AApparatus for biological treatment of waste water in downflow operationCHIYODA CHEM ENG CONSTRUCT CO·Filed 1980·Granted Jun 12, 1984·42 cites·10 claims
- 2189US4444015AMethod for recovering power according to a cascaded Rankine cycle by gasifying liquefied natural gas and utilizing the cold potentialCHIYODA CHEM ENG CONSTRUCT CO·Filed 1981·Granted Apr 24, 1984·62 cites·7 claims
- 2289US4166026ATwo-step hydrodesulfurization of heavy hydrocarbon oilCHIYODA CHEM ENG CONSTRUCT CO·Filed 1978·Granted Aug 28, 1979·46 cites·20 claims
- 2388US4562059AMethod of preparing aluminaCHIYODA CHEM ENG CONSTRUCT CO·Filed 1984·Granted Dec 31, 1985·43 cites·11 claims
- 2487US6340437B1Process for preparing synthesis gas by autothermal reformingCHIYODA CHEM ENG CONSTRUCT CO·Filed 1998·Granted Jan 22, 2002·69 cites·5 claims
- 2586US5334755AProcess for the production of acetic acid from methanol and carbon monoxide using supported rhodium catalystCHIYODA CHEM ENG CONSTRUCT CO·Filed 1993·Granted Aug 2, 1994·63 cites·8 claims
- 2686US4874483AProcess for the preparation of redox battery electrolyte and recovery of lead chlorideCHIYODA CHEM ENG CONSTRUCT CO·Filed 1989·Granted Oct 17, 1989·89 cites·10 claims
- 2786US4152250ADemetallation of hydrocarbons with catalysts supported on sepioliteCHIYODA CHEM ENG CONSTRUCT CO·Filed 1977·Granted May 1, 1979·41 cites·2 claims
- 2886US4150716AMethod of heat recovery from thermally decomposed high temperature hydrocarbon gasCHIYODA CHEM ENG CONSTRUCT CO·Filed 1977·Granted Apr 24, 1979·44 cites·8 claims
- 2986US3954673AProcess for preparing catalysts for hydrodesulfurizationCHIYODA CHEM ENG CONSTRUCT CO·Filed 1972·Granted May 4, 1976·38 cites·6 claims
- 3085US6806296B2Process of producing liquid hydrocarbon oil or dimethyl ether from lower hydrocarbon gas containing carbon dioxideCHIYODA CHEM ENG CONSTRUCT CO·Filed 2003·Granted Oct 19, 2004·33 cites·5 claims
- 3185US5436362AMethod of producing dialkylcarbonateCHIYODA CHEM ENG CONSTRUCT CO·Filed 1993·Granted Jul 25, 1995·26 cites·11 claims
- 3285US4156712AGas-liquid contacting methodCHIYODA CHEM ENG CONSTRUCT CO·Filed 1977·Granted May 29, 1979·39 cites·8 claims
- 3384US6652819B2Production of high purity vanadium compound from vanadium-containing carbonaceous residuesCHIYODA CHEM ENG CONSTRUCT CO·Filed 2001·Granted Nov 25, 2003·27 cites·9 claims
- 3483US5324867AProcess for the production of bisphenol A.CHIYODA CHEM ENG CONSTRUCT CO·Filed 1992·Granted Jun 28, 1994·18 cites·8 claims
- 3582US5365740ARefrigeration system for a natural gas liquefaction processCHIYODA CHEM ENG CONSTRUCT CO·Filed 1993·Granted Nov 22, 1994·58 cites·9 claims
- 3682US5345000AProcess for the production of crystalline adduct of bisphenol A and phenol and apparatus thereforCHIYODA CHEM ENG CONSTRUCT CO·Filed 1993·Granted Sep 6, 1994·26 cites·20 claims
- 3782US4956326AMethod for dehalogenation of a halide and catalyst used thereforCHIYODA CHEM ENG CONSTRUCT CO·Filed 1987·Granted Sep 11, 1990·28 cites·10 claims
- 3882US4950824AProcess for the production of 2,6-diisopropylnaphthaleneCHIYODA CHEM ENG CONSTRUCT CO·Filed 1989·Granted Aug 21, 1990·21 cites·31 claims
- 3982US4340466AProcess for hydrotreating heavy oils containing metalsCHIYODA CHEM ENG CONSTRUCT CO·Filed 1980·Granted Jul 20, 1982·33 cites·11 claims
- 4082US4094380AMulti layer sound-proofing structureCHIYODA CHEM ENG CONSTRUCT CO·Filed 1977·Granted Jun 13, 1978·49 cites·9 claims
- 4181US5635826AInput waveform follow-up AC power source systemCHIYODA CHEM ENG CONSTRUCT CO·Filed 1995·Granted Jun 3, 1997·67 cites·16 claims
- 4281US4555394AProcess for the preparation of aluminaCHIYODA CHEM ENG CONSTRUCT CO·Filed 1984·Granted Nov 26, 1985·29 cites·10 claims
- 4381US4465518AProcess for strengthening soft soilCHIYODA CHEM ENG CONSTRUCT CO·Filed 1982·Granted Aug 14, 1984·36 cites·10 claims
- 4480US5364963ASupported rhodium catalyst, method of preparing same and process of producing acetic acid by methanol carbonylation using sameCHIYODA CHEM ENG CONSTRUCT CO·Filed 1993·Granted Nov 15, 1994·48 cites·11 claims
- 4580US4216118AProcess for recovering vanadium accumulated on spent catalystCHIYODA CHEM ENG CONSTRUCT CO·Filed 1978·Granted Aug 5, 1980·41 cites·20 claims
- 4679US6218335B1Spinel type compound oxide and method of manufacturing the sameCHIYODA CHEM ENG CONSTRUCT CO·Filed 1999·Granted Apr 17, 2001·42 cites·8 claims
- 4779US5382712AProcess for the production of bisphenol ACHIYODA CHEM ENG CONSTRUCT CO·Filed 1994·Granted Jan 17, 1995·13 cites·6 claims
- 4879US5036904ALatent heat storage tankCHIYODA CHEM ENG CONSTRUCT CO·Filed 1990·Granted Aug 6, 1991·53 cites·5 claims
- 4978US5608169ADevice and method for testing the bearing capacity of pilesCHIYODA CHEM ENG CONSTRUCT CO·Filed 1995·Granted Mar 4, 1997·66 cites·17 claims
- 5078US5402521AMethod for recognition of abnormal conditions using neural networksCHIYODA CHEM ENG CONSTRUCT CO·Filed 1992·Granted Mar 28, 1995·105 cites·12 claims
Showing the top 50 of 121 patent records by PatentIndex Score.
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