Inventor

Kevin T. Berscheidt

Inventor

Duncan, OK, US

Overview

1993–2019

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 18 as inventor

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

E21Bprimary

E21BEarth or rock drilling95%

F16LPipes5%

PatentTitleYear

10,323,478Modular insert float system2019 9,334,710'Interruptible pressure testing valve'2016 8,322,449'Consumable downhole tools'2012 8,056,638'Consumable downhole tools'2011 7,255,162'Methods and apparatus for use in subterranean cementing operations'2007 6,666,275'Bridge plug'2003 6,491,116'Frac plug with caged ball'2002 6,394,180'Frac plug with caged ball'2002 6,220,349'Low pressure, high temperature composite bridge plug'2001 5,984,007'Chip resistant buttons for downhole tools having slip elements'1999 5,839,515'Slip retaining system for downhole tools'1998 5,669,448'Overbalance perforating and stimulation method for wells'1997 5,540,279'Downhole tool apparatus with non-metallic packer element retaining shoes'1996 5,390,737'Downhole tool with sliding valve'1995 5,343,954'Apparatus and method of anchoring and releasing from a packer'1994 5,271,468'Downhole tool apparatus with non-metallic components and methods of drilling thereof'1993 5,224,540'Downhole tool apparatus with non-metallic components and methods of drilling thereof'1993 5,207,274'Apparatus and method of anchoring and releasing from a packer'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–1996Patents assigned to HALLIBURTON CO (6)· patent assignee history

1993–2003Based in Duncan, OK, US· patent location history

1997–2012Patents assigned to HALLIBURTON ENERGY SERV INC (9)· patent assignee history

2007–2019Based in Marlow, OK, US· patent location history

2011–2012Patents assigned to BERSCHEIDT KEVIN (2)· patent assignee history

2011–2012Patents assigned to MCR OIL TOOLS LLC (2)· patent assignee history

2011–2012Patents assigned to ROBERTSON MICHAEL C (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HALLIBURTON ENERGY SERV INC	9	1997–2012
HALLIBURTON CO	6	1993–1996
BERSCHEIDT KEVINself	2	2011–2012
MCR OIL TOOLS LLC	2	2011–2012
ROBERTSON MICHAEL C	2	2011–2012

Locations

Location	Patents	Span
Duncan, OK, US	13	1993–2003
Marlow, OK, US	5	2007–2019