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Inventor

Darrel J. Hokanson

Inventor
St. Louis Park, MN, US

Overview

3→
Patents
1991–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

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

B01Dprimary
B01DSeparation20%
C07CAcyclic or carbocyclic compounds20%
C10GCracking hydrocarbon oils20%
F25BRefrigeration machines, plants or systems20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
11,052,324Advanced process control scheme for dividing wall column and dual-dividing wall column with multiple products2021D0349102'Front cover portion of a microprocessor controller housing'19945,074,329'Three-way valve for a refrigeration system'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1994Patents assigned to THERMO KING CORP (2)· patent assignee history
1991–1994Based in St. Louis Park, MN, US· patent location history
2021Patents assigned to EXXONMOBIL RES & ENG CO (1)· patent assignee history
2021Patents assigned to EXXONMOBIL RES & ENGINEERING COMPANY (1)· patent assignee history
2021Based in Houston, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
THERMO KING CORP21991–1994
EXXONMOBIL RES & ENG CO12021
EXXONMOBIL RES & ENGINEERING COMPANY12021
Locations
LocationPatentsSpan
St. Louis Park, Minnesota, US21991–1994
Houston, Texas, US12021