Inventor · disambiguated record
Pei-Shing E. Dai
Also filed as: DAI PEI S E · DAI PEI-SHING · DAI PEI-SHING E · DAI PEI-SHING EUGENE
58 granted patents·1,650 citations·filing 1988–1998
99Inventor score
Files withTEXACO INC34TEXACO CHEM INC10TEXACO CHEMICAL5HUNTSMAN SPEC CHEM CORP4ABB LUMMUS GLOBAL INC3
Top patents by PatentIndex Score
58 records- 0197US5352835ASupported catalysts for aminationTEXACO CHEMICAL·Filed 1993·Granted Oct 4, 1994·98 cites·11 claims
- 0296US5397456AHydroconversion process employing catalyst with specified pore size distributionTEXACO INC·Filed 1993·Granted Mar 14, 1995·122 cites·14 claims
- 0393US5545602ACatalyst with specified pore size distributionTEXACO INC·Filed 1995·Granted Aug 13, 1996·91 cites·10 claims
- 0492US5888921ABinary molecular sieves having a core and shell of different structures and compositionsABB LUMMUS GLOBAL INC·Filed 1995·Granted Mar 30, 1999·106 cites·24 claims
- 0592US5514273AHydroconversion process employing catalyst with specified pore size distributionTEXACO INC·Filed 1993·Granted May 7, 1996·80 cites·31 claims
- 0691US5472594AFCC process for producing enhanced yields of C4 /C5 olefinsTEXACO INC·Filed 1994·Granted Dec 5, 1995·89 cites·10 claims
- 0791US5435908AHydroconversion process employing catalyst with specified pore size distributionTEXACO INC·Filed 1994·Granted Jul 25, 1995·69 cites·8 claims
- 0889US5498586ACatalyst with specified pore size distributionTEXACO INC·Filed 1994·Granted Mar 12, 1996·54 cites·7 claims
- 0988US5928499AHydroconversion process employing catalyst with specified pore size distribution, median pore diameter by surface area, and pore mode by volumeTEXACO INC·Filed 1995·Granted Jul 27, 1999·84 cites·17 claims
- 1088US5256828AHeterogeneous catalyst for alkoxylation of alcoholsTEXACO CHEMICAL·Filed 1993·Granted Oct 26, 1993·29 cites·13 claims
- 1186US5069890AZeolite treating processTEXACO INC·Filed 1991·Granted Dec 3, 1991·58 cites·17 claims
- 1286US4941964AHydrotreatment process employing catalyst with specified pore size distributionTEXACO INC·Filed 1988·Granted Jul 17, 1990·52 cites·18 claims
- 1384US5342507AMild hydrocracking process employing catalysts containing dealuminated y-zeolitesTEXACO INC·Filed 1993·Granted Aug 30, 1994·49 cites·7 claims
- 1481US5364981AOn-step synthesis of methyl t-butyl ether from t-butanol using platinum/palladium modified β-zeolite catalystsTEXACO CHEMICAL·Filed 1993·Granted Nov 15, 1994·18 cites·21 claims
- 1581US5047142ACatalyst composition and method for hydroprocessing petroleum feedstocksTEXACO INC·Filed 1988·Granted Sep 10, 1991·38 cites·10 claims
- 1679US5370788AWax conversion processTEXACO INC·Filed 1992·Granted Dec 6, 1994·42 cites·7 claims
- 1778US5756789ASynthesis of metal--containing aluminophosphates with layered structureTEXACO INC·Filed 1996·Granted May 26, 1998·46 cites·15 claims
- 1878US5723698ACatalytic decomposition of formate impurities in tertiary butyl alcohol and methyl tertiary butyl ether streamsHUNTSMAN SPEC CHEM CORP·Filed 1995·Granted Mar 3, 1998·19 cites·16 claims
- 1977US5972205AFCC process using binary molecular sieves having a core and shell of different structures and compositionsABB LUMMUS GLOBAL INC·Filed 1998·Granted Oct 26, 1999·39 cites·7 claims
- 2076US5534135ASynthesis of zeolitesABB LUMMUS GLOBAL INC·Filed 1994·Granted Jul 9, 1996·36 cites·15 claims
- 2173US5550300AGradient catalyst system for the integrated production of isopropyl alcohol and diisopropyl ethersTEXACO CHEM INC·Filed 1994·Granted Aug 27, 1996·12 cites·21 claims
- 2271US5459118AHydrotalcite-containing catalyst compositionTEXACO INC·Filed 1994·Granted Oct 17, 1995·23 cites·5 claims
- 2370US5716896AOne-step synthesis of methyl t-butyl ether from t-butanol using β-zeolite catalysts modified with lithium plus rare earthsFiled 1994·Granted Feb 10, 1998·8 cites·13 claims
- 2469US5453411AMild hydrocracking of heavy hydrocarbon feedstocks employing silica-alumina catalystsTEXACO INC·Filed 1994·Granted Sep 26, 1995·23 cites·7 claims
- 2566US5616530AHydroconversion process employing catalyst with specified pore size distributionTEXACO INC·Filed 1995·Granted Apr 1, 1997·23 cites·8 claims
- 2666US5449839AOne step synthesis of ethyl t-butyl ether from t-butanol using β-zeolite and multimetal-modified β-zeolite catalystsTEXACO CHEM INC·Filed 1994·Granted Sep 12, 1995·8 cites·9 claims
- 2766US5094994ACatalyst composition for hydroprocessing petroleum feedstocksTEXACO INC·Filed 1991·Granted Mar 10, 1992·24 cites·6 claims
- 2864US5340466AHydrodesulfurization of cracked naphtha with hydrotalcite-containing catalystTEXACO INC·Filed 1993·Granted Aug 23, 1994·18 cites·17 claims
- 2963US5488178ADitertiary butyl peroxide preparation from tertiary butyl hydroperoxideTEXACO CHEM INC·Filed 1995·Granted Jan 30, 1996·8 cites·20 claims
- 3063US5416054AHydroconversion catalyst with specified pore size distributionTEXACO INC·Filed 1993·Granted May 16, 1995·18 cites·5 claims
- 3163US5112473AHydrotreating or cracking process employing an acidified dealuminated Y-zeoliteTEXACO INC·Filed 1990·Granted May 12, 1992·21 cites·7 claims
- 3262US5399259AHydroconversion process employing catalyst with specified pore size distributionTEXACO INC·Filed 1992·Granted Mar 21, 1995·18 cites·5 claims
- 3362US5087348AHydrocarbon treating processTEXACO INC·Filed 1991·Granted Feb 11, 1992·21 cites·2 claims
- 3461US5549813AFCC process employing low unit cell size y-zeolitesFiled 1994·Granted Aug 27, 1996·21 cites·3 claims
- 3561US5143878AZeolite treating processTEXACO INC·Filed 1991·Granted Sep 1, 1992·19 cites·12 claims
- 3660US6387248B2Method of preparing a catalyst for use in the hydrotreating of high boiling hydrocarbon feedstocksTEXACO INC·Filed 1997·Granted May 14, 2002·24 cites·19 claims
- 3760US5308472AMild hydrocracking process using catalysts containing dealuminated y-zeolitesTEXACO INC·Filed 1992·Granted May 3, 1994·20 cites·6 claims
- 3859US5690810ASingle-step process to upgrade naphthas to an improved gasoline blending stockTEXACO INC·Filed 1994·Granted Nov 25, 1997·20 cites·24 claims
- 3956US5430198ADiisopropyl ehter/MTBE cogeneration from crude by-product acetoneTEXACO CHEM INC·Filed 1993·Granted Jul 4, 1995·5 cites·19 claims
- 4056US5120891AProcess for oligomerizing olefins using a super-dealuminated Y-zeoliteTEXACO CHEMICAL·Filed 1990·Granted Jun 9, 1992·15 cites·17 claims
- 4153US5792890AMethod for the purification of tertiary butyl alcohol for use in the manufacture of methyl tertiary butyl etherHUNTSMAN SPEC CHEM CORP·Filed 1997·Granted Aug 11, 1998·5 cites·10 claims
- 4252US5476972AIsopropyl alcohol and ether production from crude by-product acetoneTEXACO CHEM INC·Filed 1994·Granted Dec 19, 1995·4 cites·15 claims
- 4352US5387722AOne-step synthesis of methyl t-butyl ether from t-butanol using pentasil zeolite catalystsTEXACO CHEM INC·Filed 1993·Granted Feb 7, 1995·4 cites·8 claims
- 4451US5488179ADitertiary butyl peroxide preparation from tertiary butyl hydroperoxideTEXACO CHEM INC·Filed 1995·Granted Jan 30, 1996·4 cites·6 claims
- 4551US5387723AOne-step synthesis of methyl t-butyl ether from t-butanol using β-zeolite catalysts modified with lithium plus rare earthsTEXACO CHEM INC·Filed 1994·Granted Feb 7, 1995·3 cites·17 claims
- 4648US5856588ATwo-stage etherification of tertiary butyl alcohol using second stage zeolite catalysts for the intermediate preparation of isobutyleneHUNTSMAN SPEC CHEM CORP·Filed 1996·Granted Jan 5, 1999·14 cites·4 claims
- 4748US5449838AIsopropyl t-butyl ether (IPTBE) generation from crude acetoneTEXACO CHEM INC·Filed 1993·Granted Sep 12, 1995·3 cites·27 claims
- 4846US5744652AMethod for the manufacture of methyl tertiary butyl ether from tertiary butyl alcohol and methanolHUNTSMAN SPEC CHEM CORP·Filed 1997·Granted Apr 28, 1998·3 cites·18 claims
- 4944US5436215AMild hydrocracking of heavy hydrocarbon feedstocks employing lithia promoted catalystsTEXACO INC·Filed 1993·Granted Jul 25, 1995·9 cites·8 claims
- 5042US5583266AIntegrated process for the production of isopropyl alcohol and diisopropyl ethersTEXACO INC·Filed 1994·Granted Dec 10, 1996·2 cites·20 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
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