LexDanaLexDanabeta
Inventor

Christopher A. Hall

Inventor
Cypress, TX, US

Overview

22→
Patents
1998–2019
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 22 as inventor

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

E21Bprimary
E21BEarth or rock drilling79%
A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing4%
H04KSecret communication4%
H04MTelephonic communication4%
H04WWireless communication networks4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
10,364,640Packer setting during high flow rate201910,280,718Gravel pack apparatus having actuated valves201910,082,007Assembly for toe-to-heel gravel packing and reverse circulating excess slurry20189,725,989'Sand control screen having improved reliability'20179,695,675'High-rate injection screen assembly with checkable ports'20179,677,383'Erosion ports for shunt tubes'20179,638,013'Apparatus and methods for well control'20179,523,264'Gravel pack crossover tool with low drag force'20169,447,661'Gravel pack and sand disposal device'20169,441,454'Gravel pack apparatus having actuated valves'20169,428,997'Multi-zone bypass packer assembly for gravel packing boreholes'20169,260,950'One trip toe-to-heel gravel pack and liner cementing assembly'20169,163,478'Inwardly swelling seal'20159,097,104'Erosion resistant flow nozzle for downhole tool'20159,085,960'Gravel pack bypass assembly'20159,068,435'Gravel pack inner string adjustment device'20159,057,251'Gravel pack inner string hydraulic locating device'20159,027,642'Dual-purpose steam injection and production tool'20158,695,709'Self-orienting crossover tool'20146,868,586'Fastening means for a bungie cord'20056,256,491'Voice security between a composite channel telephone communications link and a telephone'20015,787,180'Method of connecting a scrambler or encryption device to a hand-held portable cellular telephone'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998Based in Lancaster County, NE, US· patent location history
2001Based in Fort Collins, CO, US· patent location history
2005Based in Kent, WA, US· patent location history
2014–2016Patents assigned to HALL CHRISTOPHER (8)· patent assignee history
2014–2016Patents assigned to ZIMMERMAN PATRICK J (6)· patent assignee history
2014–2019Based in Cypress, TX, US· patent location history
2015–2016Patents assigned to BROUSSARD JOHN P (6)· patent assignee history
2015Patents assigned to WEATHERFORD TECHNOLOGY HOLDINGS LLC (6)· patent assignee history
2016–2019Patents assigned to WEATHERFORD TECH HOLDINGS LLC (8)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HALL CHRISTOPHERself82014–2016
WEATHERFORD TECH HOLDINGS LLC82016–2019
BROUSSARD JOHN P62015–2016
WEATHERFORD TECHNOLOGY HOLDINGS LLC62015
ZIMMERMAN PATRICK J62014–2016
Locations
LocationPatentsSpan
Cypress, Texas, US192014–2019
Kent, Washington, US12005
Fort Collins, CO, US12001
Lancaster County, NE, US11998