Inventor

Lawrence J. Karas

Inventor

West Chester, PA, US

Overview

25→

Patents

1988–2020

Patent span

Chemistry

Primary field (CPC C)

Patents· 25 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds27%

C10GCracking hydrocarbon oils18%

C10LFuels not otherwise provided for16%

B01DSeparation11%

C02FTreatment of water, waste water, sewage, or sludge5%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds4%

C09KMaterials for miscellaneous applications, not provided for elsewhere4%

F02BInternal-combustion piston engines4%

Y02PClimate change mitigation technologies in the production or processing of goods4%

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

PatentTitleYear

10,703,710Hydrogen sulfide scavengers2020 10,669,228Preparation of new stable hydrogen sulfide scavengers useful in both water as well as oil medium applications2020 10,538,710Hydrogen sulfide scavengers2020 10,442,755Preparation of new stable hydrogen sulfide scavengers useful in both water as well as oil medium applications2019 10,336,950Antifouling and hydrogen sulfide scavenging compositions and methods2019 10,196,343Hydrogen sulfide scavengers2019 9,523,045'Hydrogen sulfide scavengers'2016 8,933,284'Process for the production of butadiene'2015 8,293,960'Process for the production of butadiene'2012 7,314,545'Desulfurization process'2008 7,270,742'Organosulfur oxidation process'2007 7,022,885'Purification on methyl tertiary butyl ether'2006 6,555,623'Preparation of unsaturated polyesters'2003 6,417,412'Purification of tertiary butyl alcohol'2002 6,414,085'Polyester resins based on terephthalic acid and 2-methyl-1,3-propanediol and processes for the preparation thereof'2002 6,376,731'Selective olefin oligomerization'2002 6,242,640'Tertiary alkyl ester preparation using large-pore zeolite catalysts'2001 6,194,602'Tertiary alkyl ester preparation'2001 5,994,578'Ester preparation'1999 5,877,372'Isobutylene oligomerization using isooctane diluent'1999 5,308,365'Diesel fuel'1994 5,258,049'Diesel fuel composition'1993 5,081,268'Process for the preparation of oxetanes from 1,3-glycol monosulfates'1992 4,944,346'Ether sulfoxide compounds for enhanced oil recovery'1990 4,736,795'Composition and process for enhanced oil recovery'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1990Patents assigned to ATLANTIC RICHFIELD CO (2)· patent assignee history

1988–2008Based in West Chester, PA, US· patent location history

1992–2006Patents assigned to ARCO CHEM TECH (12)· patent assignee history

2007–2008Patents assigned to LYONDELL CHEMICAL TECH LP (2)· patent assignee history

2012–2015Patents assigned to LUMMUS TECHNOLOGY INC (2)· patent assignee history

2012–2015Based in Spring, TX, US· patent location history

2016–2020Patents assigned to ECOLAB USA INC (7)· patent assignee history

2016–2020Based in Missouri City, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ARCO CHEM TECH	12	1992–2006
ECOLAB USA INC	7	2016–2020
ATLANTIC RICHFIELD CO	2	1988–1990
LUMMUS TECHNOLOGY INC	2	2012–2015
LYONDELL CHEMICAL TECH LP	2	2007–2008

Locations

Location	Patents	Span
West Chester, Pennsylvania, US	16	1988–2008
Missouri City, Texas, US	7	2016–2020
Spring, Texas, US	2	2012–2015