Inventor

Warren M. Ewert

Inventor
Bartlesville, OK, US

Overview

16→
Patents
1989–2019
Patent span
Chemistry
Primary field (CPC C)

Patents· 16 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 chemistry28%
C07CAcyclic or carbocyclic compounds26%
C10GCracking hydrocarbon oils18%
Y02PClimate change mitigation technologies in the production or processing of goods13%
C10LFuels not otherwise provided for8%
B08BCleaning in general3%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2007Patents assigned to PHILLIPS PETROLEUM CO (8)· patent assignee history
1989–2019Based in Bartlesville, OK, US· patent location history
2002–2013Patents assigned to CHEVRON PHILLIPS CHEMICAL CO (3)· patent assignee history
2009Patents assigned to CHINA PETROLEUM & CHEMICAL (1)· patent assignee history
2013Patents assigned to EWERT WARREN M (1)· patent assignee history
2017–2019Patents assigned to PHILLIPS 66 CO (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PHILLIPS PETROLEUM CO81989–2007
PHILLIPS 66 CO42017–2019
CHEVRON PHILLIPS CHEMICAL CO32002–2013
CHINA PETROLEUM & CHEMICAL12009
EWERT WARREN Mself12013
Locations
LocationPatentsSpan
Bartlesville, OK, US161989–2019