LexDanaLexDanabeta
Inventor

James Fehr

Inventor
Sherwood Park, CA

Overview

11→
Patents
2000–2019
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 11 as inventor

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

E21Bprimary
E21BEarth or rock drilling91%
F24FAir-conditioning9%
PatentTitleYear
10,273,781Stage tool for wellbore cementing20199,932,797Plug retainer and method for wellbore fluid treatment20189,650,868'Stage tool for wellbore cementing'20179,574,414'Wellbore tool with indexing mechanism and method'20179,404,343'Wireline conveyed apparatus for wellbore fluid treatment'20169,151,148'Plug retainer and method for wellbore fluid treatment'20159,121,255'Stage tool for wellbore cementing'20157,722,449'Air channel grill for security institutions'20106,290,002'Pneumatic hammer drilling assembly for use in directional drilling'20016,202,762'Flow restrictor valve for a downhole drilling assembly'20016,158,513'Multiple string completion apparatus and method'2000

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2000–2001Patents assigned to HALLIBURTON ENERGY SERV INC (3)· patent assignee history
2000–2019Based in Sherwood Park, CA· patent location history
2010Based in Winnipeg, CA· patent location history
2015–2019Patents assigned to PACKERS PLUS ENERGY SERV INC (7)· patent assignee history
2015–2017Patents assigned to FEHR JAMES (4)· patent assignee history
2015–2016Patents assigned to THEMIG DANIEL JON (3)· patent assignee history
2016–2017Patents assigned to ARABSKY SERHIY (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PACKERS PLUS ENERGY SERV INC72015–2019
FEHR JAMESself42015–2017
HALLIBURTON ENERGY SERV INC32000–2001
THEMIG DANIEL JON32015–2016
ARABSKY SERHIY22016–2017
Locations
LocationPatentsSpan
Sherwood Park, CA102000–2019
Winnipeg, CA12010