Inventor

Rangasamy Pitchai

Inventor

West Chester, PA, US

Overview

1992–2001

Patent span

Chemistry

Primary field (CPC C)

Patents· 17 as inventor

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

C07Dprimary

C07DHeterocyclic compounds34%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry22%

C07CAcyclic or carbocyclic compounds19%

Y02PClimate change mitigation technologies in the production or processing of goods19%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%

C10GCracking hydrocarbon oils3%

PatentTitleYear

6,194,591'Aqueous epoxidation process using modified titanium zeolite'2001 6,083,870'Alkaline earth metal compound-supported silver catalysts'2000 5,973,171'Propylene oxide production'1999 5,874,652'Process for hydrogenating aqueous aldehyde mixtures'1999 5,770,746'Epoxidation process using supported silver catalysts pretreated with organic chloride'1998 5,763,630'Propylene oxide process using alkaline earth metal compound-supported silver catalysts'1998 5,703,254'Propylene oxide process using mixed precious metal catalyst supported on alkaline earth metal carbonate'1997 5,698,719'Oxirane production'1997 5,686,380'Vapor phase oxidation of propylene to propylene oxide'1997 5,625,084'Vapor phase oxidation of propylene to propylene oxide'1997 5,319,114'Olefin epoxidation using a carbon molecular sieve impregnated with a transition metal'1994 5,276,210'Hydroformylation process and bimetallic catalyst therefor'1994 5,233,093'Hydroformylation process and bimetallic catalyst therefor'1993 5,221,464'Process for catalytically reforming a hydrocarbon feed in the gasoline boiling range'1993 5,208,385'Preparation of tetrahydrofuran polymers having a narrow molecular weight distribution using an amorphous silica-alumina catalyst'1993 5,208,194'Recovery of group VIII transition metals from organic solutions using acidic ion-exchange resins'1993 5,166,370'Preparation of tetrahydrofuran using a supported transition metal'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2001Patents assigned to ARCO CHEM TECH (15)· patent assignee history

1992–2001Based in West Chester, PA, US· patent location history

1993Patents assigned to SUN CO INC R & M (1)· patent assignee history

1997Patents assigned to ARCO CHEMICAL TEHNOLOGY L P (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ARCO CHEM TECH	15	1992–2001
ARCO CHEMICAL TEHNOLOGY L P	1	1997
SUN CO INC R & M	1	1993

Locations

Location	Patents	Span
West Chester, Pennsylvania, US	17	1992–2001