Inventor

David L. Westfall

Inventor
Lakewood, OH, US

Overview

13→
Patents
1994–2016
Patent span
Chemistry
Primary field (CPC C)

Patents· 13 as inventor

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

C10Lprimary
C10LFuels not otherwise provided for35%
B01FMixing, e.g. dissolving, emulsifying or dispersing13%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds13%
C07CAcyclic or carbocyclic compounds4%
C07DHeterocyclic compounds4%
C07GCompounds of unknown constitution4%
C10MLubricating compositions4%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions4%
F02NStarting of combustion engines4%
H01FMagnets4%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2008Patents assigned to LUBRIZOL CORP (11)· patent assignee history
1994Based in North Olmsted, OH, US· patent location history
1998–2008Based in Lakewood, OH, US· patent location history
2016Patents assigned to TRUMPET HOLDINGS INC (1)· patent assignee history
2016Based in Germantown, WI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LUBRIZOL CORP111994–2008
TRUMPET HOLDINGS INC12016
Locations
LocationPatentsSpan
Lakewood, OH, US111998–2008
Germantown, WI, US12016
North Olmsted, OH, US11994