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Inventor

Dennis F. Ogren

Inventor
Verona, NJ, US

Overview

4→
Patents
1979–1985
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

B01Dprimary
B01DSeparation50%
C10BDestructive distillation of carbonaceous materials for production of gas, coke, tar, or similar materials25%
C10GCracking hydrocarbon oils25%
PatentTitleYear
4,547,284'Coke production'19854,251,378'Gravity settling'19814,196,080'Gravity settling process'19804,172,024'Catalyst withdrawal and addition in a coal liquefaction process'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1981Patents assigned to LUMMUS CO (3)· patent assignee history
1979–1981Based in Verona, NJ, US· patent location history
1985Patents assigned to LUMMUS CREST INC (1)· patent assignee history
1985Patents assigned to MARUZEN PETROCHEM CO LTD (1)· patent assignee history
1985Based in Sao Paulo, BR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LUMMUS CO31979–1981
LUMMUS CREST INC11985
MARUZEN PETROCHEM CO LTD11985
Locations
LocationPatentsSpan
Verona, New Jersey, US31979–1981
Sao Paulo, BR11985