LexDanaLexDanabeta
Inventor

David Johnson

Inventor
Aurora, CO, US

Overview

3→
Patents
2011–2018
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 3 as inventor

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

F42Bprimary
F42BExplosive charges, e.g. for blasting, fireworks, ammunition33%
F42DBlasting33%
E21BEarth or rock drilling17%
F42CAmmunition fuzes17%
PatentTitleYear
10,113,843Apparatus, system and method for initiation of buried explosives20188,272,325'Detonator free laser initiated blasting system'20128,028,751'Perforation method and apparatus'2011

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2011Patents assigned to HALLIBURTON ENERGY SERV INC (1)· patent assignee history
2011Based in The Woodlands, TX, US· patent location history
2012Patents assigned to APPLEBY RODNEY WAYNE (1)· patent assignee history
2012Patents assigned to GOODRIDGE RICHARD JOHN (1)· patent assignee history
2012Patents assigned to JOHNSON DAVID OLAF (1)· patent assignee history
2012Patents assigned to MILLER THOMAS (1)· patent assignee history
2012–2018Based in Aurora, CO, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
APPLEBY RODNEY WAYNE12012
GOODRIDGE RICHARD JOHN12012
HALLIBURTON ENERGY SERV INC12011
JOHNSON DAVID OLAFself12012
MILLER THOMAS12012
Locations
LocationPatentsSpan
Aurora, CO, US22012–2018
The Woodlands, Texas, US12011