Inventor

Don M. Washecheck

Inventor

Naperville, IL, US

Overview

1985–2000

Patent span

Chemistry

Primary field (CPC C)

Patents· 20 as inventor

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

Y10Sprimary

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests23%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry21%

C07CAcyclic or carbocyclic compounds21%

C10GCracking hydrocarbon oils13%

B01DSeparation9%

F01NGas-flow silencers or exhaust apparatus for machines or engines in general6%

Y02TClimate change mitigation technologies related to transportation6%

PatentTitleYear

6,096,116'Reducing ignition risk for activated carbon'2000 5,660,800'Emissions control system and method'1997 5,609,832'Emissions control system and method'1997 5,348,928'Selective hydrotreating catalyst'1994 5,328,883'Hydrocarbon conversion'1994 5,316,995'Hydrocarbon conversion catalyst'1994 5,312,795'Hydrocarbon conversion'1994 5,303,547'Emissions control system and method'1994 5,266,188'Selective hydrotreating'1993 5,245,109'Hydrocarbon conversion'1993 5,223,471'Fluorine-containing materials'1993 5,198,596'Hydrocarbon conversion'1993 5,196,634'Hydrocarbon conversion'1993 5,105,046'Oxidative conversion of lower alkanes to higher hydrocarbons via fluorine-containing materials'1992 5,024,984'Catalysts for the oxidative conversion of methane to higher hydrocarbons'1991 4,939,311'Catalysts for the oxidative conversion of methane to higher hydrocarbons'1990 4,790,930'Two-step heterocyclic nitrogen extraction from petroleum oils'1988 4,776,945'Single-stage hydrotreating process'1988 4,534,852'Single-stage hydrotreating process for converting pitch to conversion process feedstock'1985 4,530,911'Hydrodenitrification catalyst'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1988Patents assigned to SHELL OIL CO (4)· patent assignee history

1985–1988Based in Katy, TX, US· patent location history

1988–1997Based in Naperville, IL, US· patent location history

1990–1997Patents assigned to AMOCO CORP (15)· patent assignee history

2000Patents assigned to BP AMOCO CORP (1)· patent assignee history

2000Based in Stoughton, WI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AMOCO CORP	15	1990–1997
SHELL OIL CO	4	1985–1988
BP AMOCO CORP	1	2000

Locations

Location	Patents	Span
Naperville, Illinois, US	16	1988–1997
Katy, Texas, US	3	1985–1988
Stoughton, WI, US	1	2000