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Inventor

Ralph Evans Killen

Inventor
San Francisco, CA, US

Overview

2→
Patents
2015
Patent span
Performing operations
Primary field (CPC B)

Patents· 2 as inventor

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

B01Jprimary
B01JChemical or physical processes, e.g. catalysis or colloid chemistry50%
B01FMixing, e.g. dissolving, emulsifying or dispersing25%
C10GCracking hydrocarbon oils25%
PatentTitleYear
9,199,213'Fixed-bed catalyst support for a hydroprocessing reactor'20159,079,141'Vortex-type mixing device for a down-flow hydroprocessing reactor'2015

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2015Patents assigned to BOYAK CRAIG (2)· patent assignee history
2015Patents assigned to CHEVRON USA INC (2)· patent assignee history
2015Patents assigned to KILLEN RALPH EVANS (2)· patent assignee history
2015Patents assigned to KEMOUN ABDENOUR (1)· patent assignee history
2015Patents assigned to PARIMI KRISHNIAH (1)· patent assignee history
2015Based in San Francisco, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BOYAK CRAIG22015
CHEVRON USA INC22015
KILLEN RALPH EVANSself22015
KEMOUN ABDENOUR12015
PARIMI KRISHNIAH12015
Locations
LocationPatentsSpan
San Francisco, California, US22015