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Inventor

David Mason

Inventor
Anaheim Hills, CA, US

Overview

14→
Patents
1994–2013
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 14 as inventor

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

E21Bprimary
E21BEarth or rock drilling65%
Y10TTechnical subjects covered by former us classification15%
F16KValves10%
F16HGearing5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
8,356,674'Tubular running tool and methods of use'20137,753,138'Pipe running tool having internal gripper'20107,699,121'Pipe running tool having a primary load path'20107,591,304'Pipe running tool having wireless telemetry'20097,510,006'Pipe running tool having a cement path'20097,287,544'Triple valve blow out preventer'20077,121,295'Internal blow out preventer ball and seat'20066,935,204'Automated manual transmission and shift method'20056,915,857'Non-seize material attachment for a drill slip system'20056,896,048'Rotary support table'20056,845,814'Pipe-gripping structure having load rings'20056,776,070'Iron roughneck'20046,758,280'Non-seize material attachment for a drill slip system'20045,340,182'Safety elevator'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2010Patents assigned to VARCO INT (12)· patent assignee history
1994Based in Eindhoven, NL· patent location history
2004–2010Based in Anaheim Hills, CA, US· patent location history
2004–2013Based in Anaheim, CA, US· patent location history
2005Patents assigned to CATERPILLAR INC (1)· patent assignee history
2005Based in Clayton, NC, US· patent location history
2013Patents assigned to CARDELLINI DAVID (1)· patent assignee history
2013Patents assigned to DE KEIJZER NEILS (1)· patent assignee history
2013Patents assigned to DEKKER PIETER (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
VARCO INT121994–2010
CARDELLINI DAVID12013
CATERPILLAR INC12005
DE KEIJZER NEILS12013
DEKKER PIETER12013
Locations
LocationPatentsSpan
Anaheim Hills, California, US82004–2010
Anaheim, California, US42004–2013
Clayton, NC, US12005
Eindhoven, NL11994