Inventor

Pei-Shing E. Dai

Inventor

Port Arthur, TX, US

Overview

1990–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 58 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B01Jprimary

B01JChemical or physical processes, e.g. catalysis or colloid chemistry34%

C10GCracking hydrocarbon oils30%

C07CAcyclic or carbocyclic compounds21%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

Y02PClimate change mitigation technologies in the production or processing of goods3%

B01DSeparation2%

B64CAeroplanes1%

C01BNon-metallic elements1%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium1%

C10MLubricating compositions1%

PatentTitleYear

6,387,248'Method of preparing a catalyst for use in the hydrotreating of high boiling hydrocarbon feedstocks'2002 5,972,205'FCC process using binary molecular sieves having a core and shell of different structures and compositions'1999 5,928,499'Hydroconversion process employing catalyst with specified pore size distribution, median pore diameter by surface area, and pore mode by volume'1999 5,888,921'Binary molecular sieves having a core and shell of different structures and compositions'1999 5,856,588'Two-stage etherification of tertiary butyl alcohol using second stage zeolite catalysts for the intermediate preparation of isobutylene'1999 5,792,890'Method for the purification of tertiary butyl alcohol for use in the manufacture of methyl tertiary butyl ether'1998 5,756,789'Synthesis of metal--containing aluminophosphates with layered structure'1998 5,744,652'Method for the manufacture of methyl tertiary butyl ether from tertiary butyl alcohol and methanol'1998 5,723,698'Catalytic decomposition of formate impurities in tertiary butyl alcohol and methyl tertiary butyl ether streams'1998 5,716,896'One-step synthesis of methyl t-butyl ether from t-butanol using .beta.-zeolite catalysts modified with lithium plus rare earths'1998 5,690,810'Single-step process to upgrade naphthas to an improved gasoline blending stock'1997 5,637,778'Isopropyl alcohol and diispropyl ether production from crude by-product acetone in one step'1997 5,616,530'Hydroconversion process employing catalyst with specified pore size distribution'1997 5,583,266'Integrated process for the production of isopropyl alcohol and diisopropyl ethers'1996 5,550,300'Gradient catalyst system for the integrated production of isopropyl alcohol and diisopropyl ethers'1996 5,549,813'FCC process employing low unit cell size y-zeolites'1996 5,545,602'Catalyst with specified pore size distribution'1996 5,534,135'Synthesis of zeolites'1996 5,514,273'Hydroconversion process employing catalyst with specified pore size distribution'1996 5,498,586'Catalyst with specified pore size distribution'1996 5,488,179'Ditertiary butyl peroxide preparation from tertiary butyl hydroperoxide'1996 5,488,178'Ditertiary butyl peroxide preparation from tertiary butyl hydroperoxide'1996 5,476,972'Isopropyl alcohol and ether production from crude by-product acetone'1995 5,472,594'FCC process for producing enhanced yields of C.sub.4 /C.sub.5 olefins'1995 5,459,118'Hydrotalcite-containing catalyst composition'1995 5,453,411'Mild hydrocracking of heavy hydrocarbon feedstocks employing silica-alumina catalysts'1995 5,449,838'Isopropyl t-butyl ether (IPTBE) generation from crude acetone'1995 5,449,839'One step synthesis of ethyl t-butyl ether from t-butanol using .beta.-zeolite and multimetal-modified .beta.-zeolite catalysts'1995 5,435,908'Hydroconversion process employing catalyst with specified pore size distribution'1995 5,436,215'Mild hydrocracking of heavy hydrocarbon feedstocks employing lithia promoted catalysts'1995 5,430,198'Diisopropyl ehter/MTBE cogeneration from crude by-product acetone'1995 5,416,054'Hydroconversion catalyst with specified pore size distribution'1995 5,399,259'Hydroconversion process employing catalyst with specified pore size distribution'1995 5,397,456'Hydroconversion process employing catalyst with specified pore size distribution'1995 5,391,286'Process for catalytic dewaxing of hydrocarbon feedstocks'1995 5,387,723'One-step synthesis of methyl t-butyl ether from t-butanol using .beta.-zeolite catalysts modified with lithium plus rare earths'1995 5,387,722'One-step synthesis of methyl t-butyl ether from t-butanol using pentasil zeolite catalysts'1995 5,370,788'Wax conversion process'1994 5,364,981'On-step synthesis of methyl t-butyl ether from t-butanol using platinum/palladium modified .beta.-zeolite catalysts'1994 5,352,835'Supported catalysts for amination'1994 5,342,507'Mild hydrocracking process employing catalysts containing dealuminated y-zeolites'1994 5,340,466'Hydrodesulfurization of cracked naphtha with hydrotalcite-containing catalyst'1994 5,332,490'Catalytic process for dewaxing hydrocarbon feedstocks'1994 5,322,616'Mild hydrocracking of heavy hydrocarbon feedstocks employing lithia promoted catalysts'1994 5,320,743'Mild hydrocracking of heavy hydrocarbon feedstocks employing silica-alumina catalysts'1994 5,308,472'Mild hydrocracking process using catalysts containing dealuminated y-zeolites'1994 5,276,215'Alkylphenol synthesis using zeolites as catalysts, particularly dealuminized y-zeolites'1994 5,256,828'Heterogeneous catalyst for alkoxylation of alcohols'1993 5,143,878'Zeolite treating process'1992 5,126,299'Catalyst for the control of SO.sub.x emission'1992 5,120,891'Process for oligomerizing olefins using a super-dealuminated Y-zeolite'1992 5,112,473'Hydrotreating or cracking process employing an acidified dealuminated Y-zeolite'1992 5,094,994'Catalyst composition for hydroprocessing petroleum feedstocks'1992 5,087,348'Hydrocarbon treating process'1992 5,069,890'Zeolite treating process'1991 5,047,142'Catalyst composition and method for hydroprocessing petroleum feedstocks'1991 5,021,228'Control of sox emission'1991 4,941,964'Hydrotreatment process employing catalyst with specified pore size distribution'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2002Patents assigned to TEXACO INC (34)· patent assignee history

1990–2002Based in Port Arthur, TX, US· patent location history

1992–1994Patents assigned to TEXACO CHEMICAL (5)· patent assignee history

1995–1997Patents assigned to TEXACO CHEM INC (10)· patent assignee history

1996–1999Patents assigned to ABB LUMMUS GLOBAL INC (3)· patent assignee history

1998–1999Patents assigned to HUNTSMAN SPEC CHEM CORP (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TEXACO INC	34	1990–2002
TEXACO CHEM INC	10	1995–1997
TEXACO CHEMICAL	5	1992–1994
HUNTSMAN SPEC CHEM CORP	4	1998–1999
ABB LUMMUS GLOBAL INC	3	1996–1999

Locations

Location	Patents	Span
Port Arthur, Texas, US	58	1990–2002