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Inventor

Darrel Henry Meffert

Inventor
Sahuarita, AZ, US

Overview

5→
Patents
2003–2015
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 5 as inventor

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

F02Mprimary
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof30%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general20%
B62DMotor vehicles10%
E02FDredging10%
F02BInternal-combustion piston engines10%
F02NStarting of combustion engines10%
Y02TClimate change mitigation technologies related to transportation10%
PatentTitleYear
9,102,372'Track drive system and method'20158,359,848'Exhaust treatment device having flow-promoting end caps'20137,757,484'Exhaust treatment device having flow-promoting end caps'20107,185,614'Double bowl piston'20076,604,508'Volume reducer for pressurizing engine hydraulic system'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2015Patents assigned to CATERPILLAR INC (5)· patent assignee history
2003–2007Based in Sparland, IL, US· patent location history
2010–2015Based in Sahuarita, AZ, US· patent location history
2013–2015Patents assigned to MEFFERT DARREL HENRY (2)· patent assignee history
2013Patents assigned to ALEKSONIS JONAS ARUNAS (1)· patent assignee history
2013Patents assigned to BOLAND TIMOTHY JOHN (1)· patent assignee history
2013Patents assigned to BRUZA PHILIP STEPHEN (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CATERPILLAR INC52003–2015
MEFFERT DARREL HENRYself22013–2015
ALEKSONIS JONAS ARUNAS12013
BOLAND TIMOTHY JOHN12013
BRUZA PHILIP STEPHEN12013
Locations
LocationPatentsSpan
Sahuarita, AZ, US32010–2015
Sparland, Illinois, US22003–2007